CCL - BIPM

<!DOCTYPE html> <html class="ltr" dir="ltr" lang="en-US"> <head> <title>CCL - BIPM</title> <meta content="initial-scale=1.0, width=device-width" name="viewport" /> <meta content="text/html; charset=UTF-8" http-equiv="content-type" /> <script type="importmap">{"imports":{"react-dom":"/o/frontend-js-react-web/__liferay__/exports/react-dom.js","prop-types":"/o/frontend-js-react-web/__liferay__/exports/prop-types.js","react-dnd":"/o/frontend-js-react-web/__liferay__/exports/react-dnd.js","formik":"/o/frontend-js-react-web/__liferay__/exports/formik.js","react":"/o/frontend-js-react-web/__liferay__/exports/react.js","react-dnd-html5-backend":"/o/frontend-js-react-web/__liferay__/exports/react-dnd-html5-backend.js","classnames":"/o/frontend-js-react-web/__liferay__/exports/classnames.js"},"scopes":{}}</script><script data-senna-track="temporary">var Liferay = window.Liferay || {};Liferay.Icons = Liferay.Icons || {};Liferay.Icons.spritemap = 'https://www.bipm.org/o/bipm-theme/images/clay/icons.svg';</script> <link data-senna-track="permanent" href="/o/frontend-theme-font-awesome-web/css/main.css?&mac=zhM/yFBF7JVabj8krPa8Nb25jYM=&browserId=ie&languageId=en_US&minifierType=css&themeId=bipmtheme_WAR_bipmtheme" rel="stylesheet" type="text/css" /> <script data-senna-track="permanent" src="/combo?browserId=ie&minifierType=js&languageId=en_US&t=1732534544552&/o/frontend-js-jquery-web/jquery/jquery.min.js&/o/frontend-js-jquery-web/jquery/init.js&/o/frontend-js-jquery-web/jquery/ajax.js&/o/frontend-js-jquery-web/jquery/bootstrap.bundle.min.js&/o/frontend-js-jquery-web/jquery/collapsible_search.js&/o/frontend-js-jquery-web/jquery/fm.js&/o/frontend-js-jquery-web/jquery/form.js&/o/frontend-js-jquery-web/jquery/popper.min.js&/o/frontend-js-jquery-web/jquery/side_navigation.js" type="text/javascript"></script> <link data-senna-track="temporary" href="https://www.bipm.org/en/committees/cc/ccl" rel="canonical" /> <link data-senna-track="temporary" href="https://www.bipm.org/fr/committees/cc/ccl" hreflang="fr-FR" rel="alternate" /> <link data-senna-track="temporary" href="https://www.bipm.org/en/committees/cc/ccl" hreflang="en-US" rel="alternate" /> <link data-senna-track="temporary" href="https://www.bipm.org/en/committees/cc/ccl" hreflang="x-default" rel="alternate" /> <meta property="og:locale" content="en_US"> <meta property="og:locale:alternate" content="en_US"> <meta property="og:locale:alternate" content="fr_FR"> <meta property="og:site_name" content="BIPM"> <meta property="og:title" content="CCL - BIPM"> <meta property="og:type" content="website"> <meta property="og:url" content="https://www.bipm.org/en/committees/cc/ccl"> <link href="https://www.bipm.org/o/bipm-theme/images/favicon.ico" rel="icon" /> <link class="lfr-css-file" data-senna-track="temporary" href="https://www.bipm.org/o/bipm-theme/css/clay.css?browserId=ie&themeId=bipmtheme_WAR_bipmtheme&minifierType=css&languageId=en_US&t=1732534532000" id="liferayAUICSS" rel="stylesheet" type="text/css" /> <link href="/combo?browserId=ie&minifierType=css&themeId=bipmtheme_WAR_bipmtheme&languageId=en_US&com_liferay_asset_publisher_web_portlet_AssetPublisherPortlet_INSTANCE_dFyK3vffnxwl:%2Fo%2Fasset-publisher-web%2Fcss%2Fmain.css&com_liferay_journal_content_web_portlet_JournalContentPortlet_INSTANCE_DsJxKZabodD8:%2Fo%2Fjournal-content-web%2Fcss%2Fmain.css&com_liferay_product_navigation_product_menu_web_portlet_ProductMenuPortlet:%2Fo%2Fproduct-navigation-product-menu-web%2Fcss%2Fmain.css&com_liferay_site_navigation_menu_web_portlet_SiteNavigationMenuPortlet:%2Fo%2Fsite-navigation-menu-web%2Fcss%2Fmain.css&t=1732534532000" rel="stylesheet" type="text/css" data-senna-track="temporary" id="c0bf1590" /> <script data-senna-track="temporary" type="text/javascript"> // <![CDATA[ var Liferay = Liferay || {}; Liferay.Browser = { acceptsGzip: function() { return true; }, getMajorVersion: function() { return 7.0; }, getRevision: function() { return '7.0'; }, getVersion: function() { return '7.0'; }, isAir: function() { return false; }, isChrome: function() { return false; }, isEdge: function() { return false; }, isFirefox: function() { return false; }, isGecko: function() { return false; }, isIe: function() { return true; }, isIphone: function() { return false; }, isLinux: function() { return false; }, isMac: function() { return false; }, isMobile: function() { return false; }, isMozilla: function() { return false; }, isOpera: function() { return false; }, isRtf: function() { return true; }, isSafari: function() { return false; }, isSun: function() { return false; }, isWebKit: function() { return false; }, isWindows: function() { return true; } }; Liferay.Data = Liferay.Data || {}; Liferay.Data.ICONS_INLINE_SVG = true; Liferay.Data.NAV_SELECTOR = '#navigation'; Liferay.Data.NAV_SELECTOR_MOBILE = '#navigationCollapse'; Liferay.Data.isCustomizationView = function() { return false; }; Liferay.Data.notices = [ ]; (function () { var available = {}; var direction = {}; available['en_US'] = 'English\x20\x28United\x20States\x29'; direction['en_US'] = 'ltr'; available['fr_FR'] = 'French\x20\x28France\x29'; direction['fr_FR'] = 'ltr'; Liferay.Language = { available, direction, get: function(key) { return key; } }; })(); var featureFlags = {"LPS-165493":"false","COMMERCE-9410":"false","LRAC-10632":"false","COMMERCE-8087":"false","LPS-114786":"false","ui.visible[beta]":"true","LRAC-10757":"false","LPS-170809":"false","LPS-156421":"false","LPS-161364":"false","LPS-157670":"false","COMMERCE-5898":"false","LPS-155692":"false","LPS-166216":"false","LPS-169923":"false","LPS-171440":"false","LPS-170670":"false","LPS-169981":"false","LPS-155659":"false","LPS-153117":"false","LPS-171722":"false","LPS-163118":"false","LPS-135430":"false","LPS-142518":"false","LPS-164563":"false","ui.visible[release]":"true","LPS-168886":"false","ui.visible[dev]":"false","LPS-158259":"false","LPS-153324":"false","LPS-166036":"false","LPS-166479":"false","LPS-144527":"false","COMMERCE-8949":"false","LPS-83384":"false","LPS-163688":"false","LPS-166954":"false","LPS-165482":"false","LPS-162964":"false","LPS-161313":"false","LPS-155284":"false","LPS-161631":"false","LPS-162966":"false","LPS-158675":"false","LPS-159643":"false","LPS-154672":"false","LPS-164948":"false","LPS-165476":"false","LPS-166126":"false","LPS-167536":"false","LPS-162765":"false"}; Liferay.FeatureFlags = Object.keys(featureFlags).reduce( (acc, key) => ({ ...acc, [key]: featureFlags[key] === 'true' || featureFlags[key] === true }), {} ); Liferay.PortletKeys = { DOCUMENT_LIBRARY: 'com_liferay_document_library_web_portlet_DLPortlet', DYNAMIC_DATA_MAPPING: 'com_liferay_dynamic_data_mapping_web_portlet_DDMPortlet', ITEM_SELECTOR: 'com_liferay_item_selector_web_portlet_ItemSelectorPortlet' }; Liferay.PropsValues = { JAVASCRIPT_SINGLE_PAGE_APPLICATION_TIMEOUT: 0, UPLOAD_SERVLET_REQUEST_IMPL_MAX_SIZE: 272629760 }; Liferay.ThemeDisplay = { getLayoutId: function() { return '17824'; }, getLayoutRelativeControlPanelURL: function() { return '/en/group/guest/~/control_panel/manage'; }, getLayoutRelativeURL: function() { return '/en/committees/cc/ccl'; }, getLayoutURL: function() { return 'https://www.bipm.org/en/committees/cc/ccl'; }, getParentLayoutId: function() { return '17819'; }, isControlPanel: function() { return false; }, isPrivateLayout: function() { return 'false'; }, isVirtualLayout: function() { return false; }, getBCP47LanguageId: function() { return 'en-US'; }, getCanonicalURL: function() { return 'https\x3a\x2f\x2fwww\x2ebipm\x2eorg\x2fen\x2fcommittees\x2fcc\x2fccl'; }, getCDNBaseURL: function() { return 'https://www.bipm.org'; }, getCDNDynamicResourcesHost: function() { return ''; }, getCDNHost: function() { return ''; }, getCompanyGroupId: function() { return '20135'; }, getCompanyId: function() { return '20099'; }, getDefaultLanguageId: function() { return 'en_US'; }, getDoAsUserIdEncoded: function() { return ''; }, getLanguageId: function() { return 'en_US'; }, getParentGroupId: function() { return '20126'; }, getPathContext: function() { return ''; }, getPathImage: function() { return '/image'; }, getPathJavaScript: function() { return '/o/frontend-js-web'; }, getPathMain: function() { return '/en/c'; }, getPathThemeImages: function() { return 'https://www.bipm.org/o/bipm-theme/images'; }, getPathThemeRoot: function() { return '/o/bipm-theme'; }, getPathThemeSpritemap: function() { return 'https://www.bipm.org/o/bipm-theme/images/clay/icons.svg'; }, getPlid: function() { return '1072792'; }, getPortalURL: function() { return 'https://www.bipm.org'; }, getRealUserId: function() { return '20103'; }, getRemoteAddr: function() { return '192.168.255.1'; }, getRemoteHost: function() { return '192.168.255.1'; }, getScopeGroupId: function() { return '20126'; }, getScopeGroupIdOrLiveGroupId: function() { return '20126'; }, getSessionId: function() { return ''; }, getSiteAdminURL: function() { return 'https://www.bipm.org/group/guest/~/control_panel/manage?p_p_lifecycle=0&p_p_state=maximized&p_p_mode=view'; }, getSiteGroupId: function() { return '20126'; }, getURLControlPanel: function() { return '/en/group/control_panel?refererPlid=1072792'; }, getURLHome: function() { return 'https\x3a\x2f\x2fwww\x2ebipm\x2eorg\x2fweb\x2fguest'; }, getUserEmailAddress: function() { return ''; }, getUserId: function() { return '20103'; }, getUserName: function() { return ''; }, isAddSessionIdToURL: function() { return false; }, isImpersonated: function() { return false; }, isSignedIn: function() { return false; }, isStagedPortlet: function() { return false; }, isStateExclusive: function() { return false; }, isStateMaximized: function() { return false; }, isStatePopUp: function() { return false; } }; var themeDisplay = Liferay.ThemeDisplay; Liferay.AUI = { getCombine: function() { return true; }, getComboPath: function() { return '/combo/?browserId=ie&minifierType=&languageId=en_US&t=1732534485479&'; }, getDateFormat: function() { return '%m/%d/%Y'; }, getEditorCKEditorPath: function() { return '/o/frontend-editor-ckeditor-web'; }, getFilter: function() { var filter = 'raw'; filter = 'min'; return filter; }, getFilterConfig: function() { var instance = this; var filterConfig = null; if (!instance.getCombine()) { filterConfig = { replaceStr: '.js' + instance.getStaticResourceURLParams(), searchExp: '\\.js$' }; } return filterConfig; }, getJavaScriptRootPath: function() { return '/o/frontend-js-web'; }, getPortletRootPath: function() { return '/html/portlet'; }, getStaticResourceURLParams: function() { return '?browserId=ie&minifierType=&languageId=en_US&t=1732534485479'; } }; Liferay.authToken = 'FObHXGNW'; Liferay.currentURL = '\x2fen\x2fcommittees\x2fcc\x2fccl'; Liferay.currentURLEncoded = '\x252Fen\x252Fcommittees\x252Fcc\x252Fccl'; // ]]> </script> <script data-senna-track="temporary" type="text/javascript">window.__CONFIG__= {basePath: '',combine: true, defaultURLParams: null, explainResolutions: false, exposeGlobal: false, logLevel: 'warn', moduleType: 'module', namespace:'Liferay', reportMismatchedAnonymousModules: 'warn', resolvePath: '/o/js_resolve_modules', url: '/combo/?browserId=ie&minifierType=js&languageId=en_US&t=1732534485479&', waitTimeout: 7000};</script><script data-senna-track="permanent" src="/o/frontend-js-loader-modules-extender/loader.js?&mac=kuyYLzgmJRuntKLenfFpZdHstco=&browserId=ie&languageId=en_US&minifierType=js" type="text/javascript"></script><script data-senna-track="permanent" src="/combo?browserId=ie&minifierType=js&languageId=en_US&t=1732534485479&/o/frontend-js-aui-web/aui/aui/aui-min.js&/o/frontend-js-aui-web/liferay/modules.js&/o/frontend-js-aui-web/liferay/aui_sandbox.js&/o/frontend-js-aui-web/aui/attribute-base/attribute-base-min.js&/o/frontend-js-aui-web/aui/attribute-complex/attribute-complex-min.js&/o/frontend-js-aui-web/aui/attribute-core/attribute-core-min.js&/o/frontend-js-aui-web/aui/attribute-observable/attribute-observable-min.js&/o/frontend-js-aui-web/aui/attribute-extras/attribute-extras-min.js&/o/frontend-js-aui-web/aui/event-custom-base/event-custom-base-min.js&/o/frontend-js-aui-web/aui/event-custom-complex/event-custom-complex-min.js&/o/frontend-js-aui-web/aui/oop/oop-min.js&/o/frontend-js-aui-web/aui/aui-base-lang/aui-base-lang-min.js&/o/frontend-js-aui-web/liferay/dependency.js&/o/frontend-js-aui-web/liferay/util.js&/o/oauth2-provider-web/js/liferay.js&/o/frontend-js-web/liferay/dom_task_runner.js&/o/frontend-js-web/liferay/events.js&/o/frontend-js-web/liferay/lazy_load.js&/o/frontend-js-web/liferay/liferay.js&/o/frontend-js-web/liferay/global.bundle.js&/o/frontend-js-web/liferay/portlet.js&/o/frontend-js-web/liferay/workflow.js&/o/frontend-js-module-launcher/webpack_federation.js" type="text/javascript"></script> <script data-senna-track="temporary" type="text/javascript">window.Liferay = Liferay || {}; window.Liferay.OAuth2 = {getAuthorizeURL: function() {return 'https://www.bipm.org/o/oauth2/authorize';}, getBuiltInRedirectURL: function() {return 'https://www.bipm.org/o/oauth2/redirect';}, getIntrospectURL: function() { return 'https://www.bipm.org/o/oauth2/introspect';}, getTokenURL: function() {return 'https://www.bipm.org/o/oauth2/token';}, getUserAgentApplication: function(externalReferenceCode) {return Liferay.OAuth2._userAgentApplications[externalReferenceCode];}, _userAgentApplications: {}}</script><script data-senna-track="temporary" type="text/javascript">try {var MODULE_MAIN='null';var MODULE_PATH='/o/bipm-ui-js-module';;(function() { var LiferayAUI = Liferay.AUI; AUI().applyConfig( { groups: { 'bipm-ui-js': { base: MODULE_PATH + '/js/', combine: Liferay.AUI.getCombine(), filter: LiferayAUI.getFilterConfig(), modules: { 'bipm-list-filter': { path: 'listfilter.js', requires: [ 'aui-component', 'liferay-pagination', ] }, 'bipm-cookie-agreement':{ path:'cookiepolicy.js', requires: [ 'aui-component', 'cookie' ] }, 'bipm-ddm-form':{ path:'ddmform.js', requires: [ 'aui-component', 'liferay-ddm-form' ] }, 'bipm-slice-mask':{ path:'slicemask.js', requires: [ 'aui-component' ] }, 'bipm-see-more': { path:'seemore.js', requires: [ 'aui-component' ] } }, root: MODULE_PATH + '/js/' }, 'templates': { base: MODULE_PATH + '/', combine: Liferay.AUI.getCombine(), root: MODULE_PATH + '/' } } } ); })();} catch(error) {console.error(error);}try {var MODULE_MAIN='segments-simulation-web@3.0.23/index';var MODULE_PATH='/o/segments-simulation-web';AUI().applyConfig({groups:{segmentssimulation:{base:MODULE_PATH+"/js/",combine:Liferay.AUI.getCombine(),filter:Liferay.AUI.getFilterConfig(),modules:{"liferay-portlet-segments-simulation":{path:"main.js",requires:["aui-base","liferay-portlet-base"]}},root:MODULE_PATH+"/js/"}}}); } catch(error) {console.error(error);}try {var MODULE_MAIN='calendar-web@5.0.67/index';var MODULE_PATH='/o/calendar-web';AUI().applyConfig({groups:{calendar:{base:MODULE_PATH+"/js/",combine:Liferay.AUI.getCombine(),filter:Liferay.AUI.getFilterConfig(),modules:{"liferay-calendar-a11y":{path:"calendar_a11y.js",requires:["calendar"]},"liferay-calendar-container":{path:"calendar_container.js",requires:["aui-alert","aui-base","aui-component","liferay-portlet-base"]},"liferay-calendar-date-picker-sanitizer":{path:"date_picker_sanitizer.js",requires:["aui-base"]},"liferay-calendar-interval-selector":{path:"interval_selector.js",requires:["aui-base","liferay-portlet-base"]},"liferay-calendar-interval-selector-scheduler-event-link":{path:"interval_selector_scheduler_event_link.js",requires:["aui-base","liferay-portlet-base"]},"liferay-calendar-list":{path:"calendar_list.js",requires:["aui-template-deprecated","liferay-scheduler"]},"liferay-calendar-message-util":{path:"message_util.js",requires:["liferay-util-window"]},"liferay-calendar-recurrence-converter":{path:"recurrence_converter.js",requires:[]},"liferay-calendar-recurrence-dialog":{path:"recurrence.js",requires:["aui-base","liferay-calendar-recurrence-util"]},"liferay-calendar-recurrence-util":{path:"recurrence_util.js",requires:["aui-base","liferay-util-window"]},"liferay-calendar-reminders":{path:"calendar_reminders.js",requires:["aui-base"]},"liferay-calendar-remote-services":{path:"remote_services.js",requires:["aui-base","aui-component","liferay-calendar-util","liferay-portlet-base"]},"liferay-calendar-session-listener":{path:"session_listener.js",requires:["aui-base","liferay-scheduler"]},"liferay-calendar-simple-color-picker":{path:"simple_color_picker.js",requires:["aui-base","aui-template-deprecated"]},"liferay-calendar-simple-menu":{path:"simple_menu.js",requires:["aui-base","aui-template-deprecated","event-outside","event-touch","widget-modality","widget-position","widget-position-align","widget-position-constrain","widget-stack","widget-stdmod"]},"liferay-calendar-util":{path:"calendar_util.js",requires:["aui-datatype","aui-io","aui-scheduler","aui-toolbar","autocomplete","autocomplete-highlighters"]},"liferay-scheduler":{path:"scheduler.js",requires:["async-queue","aui-datatype","aui-scheduler","dd-plugin","liferay-calendar-a11y","liferay-calendar-message-util","liferay-calendar-recurrence-converter","liferay-calendar-recurrence-util","liferay-calendar-util","liferay-scheduler-event-recorder","liferay-scheduler-models","promise","resize-plugin"]},"liferay-scheduler-event-recorder":{path:"scheduler_event_recorder.js",requires:["dd-plugin","liferay-calendar-util","resize-plugin"]},"liferay-scheduler-models":{path:"scheduler_models.js",requires:["aui-datatype","dd-plugin","liferay-calendar-util"]}},root:MODULE_PATH+"/js/"}}}); } catch(error) {console.error(error);}try {var MODULE_MAIN='product-navigation-taglib@6.0.41/index';var MODULE_PATH='/o/product-navigation-taglib';AUI().applyConfig({groups:{controlmenu:{base:MODULE_PATH+"/",combine:Liferay.AUI.getCombine(),filter:Liferay.AUI.getFilterConfig(),modules:{"liferay-product-navigation-control-menu":{path:"control_menu/js/product_navigation_control_menu.js",requires:["aui-node","event-touch"]}},root:MODULE_PATH+"/"}}}); } catch(error) {console.error(error);}try {var MODULE_MAIN='staging-taglib@7.0.34/index';var MODULE_PATH='/o/staging-taglib';AUI().applyConfig({groups:{stagingTaglib:{base:MODULE_PATH+"/",combine:Liferay.AUI.getCombine(),filter:Liferay.AUI.getFilterConfig(),modules:{"liferay-export-import-management-bar-button":{path:"export_import_entity_management_bar_button/js/main.js",requires:["aui-component","liferay-search-container","liferay-search-container-select"]}},root:MODULE_PATH+"/"}}}); } catch(error) {console.error(error);}try {var MODULE_MAIN='portal-workflow-kaleo-designer-web@5.0.96/index';var MODULE_PATH='/o/portal-workflow-kaleo-designer-web';AUI().applyConfig({groups:{"kaleo-designer":{base:MODULE_PATH+"/designer/js/legacy/",combine:Liferay.AUI.getCombine(),filter:Liferay.AUI.getFilterConfig(),modules:{"liferay-kaleo-designer-autocomplete-util":{path:"autocomplete_util.js",requires:["autocomplete","autocomplete-highlighters"]},"liferay-kaleo-designer-definition-diagram-controller":{path:"definition_diagram_controller.js",requires:["liferay-kaleo-designer-field-normalizer","liferay-kaleo-designer-utils"]},"liferay-kaleo-designer-dialogs":{path:"dialogs.js",requires:["liferay-util-window"]},"liferay-kaleo-designer-editors":{path:"editors.js",requires:["aui-ace-editor","aui-ace-editor-mode-xml","aui-base","aui-datatype","aui-node","liferay-kaleo-designer-autocomplete-util","liferay-kaleo-designer-utils"]},"liferay-kaleo-designer-field-normalizer":{path:"field_normalizer.js",requires:["liferay-kaleo-designer-remote-services"]},"liferay-kaleo-designer-nodes":{path:"nodes.js",requires:["aui-datatable","aui-datatype","aui-diagram-builder","liferay-kaleo-designer-editors","liferay-kaleo-designer-utils"]},"liferay-kaleo-designer-remote-services":{path:"remote_services.js",requires:["aui-io","liferay-portlet-url"]},"liferay-kaleo-designer-templates":{path:"templates.js",requires:["aui-tpl-snippets-deprecated"]},"liferay-kaleo-designer-utils":{path:"utils.js",requires:[]},"liferay-kaleo-designer-xml-definition":{path:"xml_definition.js",requires:["aui-base","aui-component","dataschema-xml","datatype-xml"]},"liferay-kaleo-designer-xml-definition-serializer":{path:"xml_definition_serializer.js",requires:["escape","liferay-kaleo-designer-xml-util"]},"liferay-kaleo-designer-xml-util":{path:"xml_util.js",requires:["aui-base"]},"liferay-portlet-kaleo-designer":{path:"main.js",requires:["aui-ace-editor","aui-ace-editor-mode-xml","aui-tpl-snippets-deprecated","dataschema-xml","datasource","datatype-xml","event-valuechange","io-form","liferay-kaleo-designer-autocomplete-util","liferay-kaleo-designer-editors","liferay-kaleo-designer-nodes","liferay-kaleo-designer-remote-services","liferay-kaleo-designer-utils","liferay-kaleo-designer-xml-util","liferay-util-window"]}},root:MODULE_PATH+"/designer/js/legacy/"}}}); } catch(error) {console.error(error);}try {var MODULE_MAIN='journal-web@5.0.123/index';var MODULE_PATH='/o/journal-web';AUI().applyConfig({groups:{journal:{base:MODULE_PATH+"/js/",combine:Liferay.AUI.getCombine(),filter:Liferay.AUI.getFilterConfig(),modules:{"liferay-journal-navigation":{path:"navigation.js",requires:["aui-component","liferay-portlet-base","liferay-search-container"]},"liferay-portlet-journal":{path:"main.js",requires:["aui-base","aui-dialog-iframe-deprecated","liferay-portlet-base","liferay-util-window"]}},root:MODULE_PATH+"/js/"}}}); } catch(error) {console.error(error);}try {var MODULE_MAIN='commerce-product-content-web@4.0.78/index';var MODULE_PATH='/o/commerce-product-content-web';AUI().applyConfig({groups:{productcontent:{base:MODULE_PATH+"/js/",combine:Liferay.AUI.getCombine(),modules:{"liferay-commerce-product-content":{path:"product_content.js",requires:["aui-base","aui-io-request","aui-parse-content","liferay-portlet-base","liferay-portlet-url"]}},root:MODULE_PATH+"/js/"}}}); } catch(error) {console.error(error);}try {var MODULE_MAIN='commerce-frontend-impl@4.0.34/index';var MODULE_PATH='/o/commerce-frontend-impl';AUI().applyConfig({groups:{commercefrontend:{base:MODULE_PATH+"/js/",combine:Liferay.AUI.getCombine(),modules:{"liferay-commerce-frontend-asset-categories-selector":{path:"liferay_commerce_frontend_asset_categories_selector.js",requires:["aui-tree","liferay-commerce-frontend-asset-tag-selector"]},"liferay-commerce-frontend-asset-tag-selector":{path:"liferay_commerce_frontend_asset_tag_selector.js",requires:["aui-io-plugin-deprecated","aui-live-search-deprecated","aui-template-deprecated","aui-textboxlist-deprecated","datasource-cache","liferay-service-datasource"]},"liferay-commerce-frontend-management-bar-state":{condition:{trigger:"liferay-management-bar"},path:"management_bar_state.js",requires:["liferay-management-bar"]}},root:MODULE_PATH+"/js/"}}}); } catch(error) {console.error(error);}try {var MODULE_MAIN='portal-search-web@6.0.89/index';var MODULE_PATH='/o/portal-search-web';AUI().applyConfig({groups:{search:{base:MODULE_PATH+"/js/",combine:Liferay.AUI.getCombine(),filter:Liferay.AUI.getFilterConfig(),modules:{"liferay-search-bar":{path:"search_bar.js",requires:[]},"liferay-search-custom-filter":{path:"custom_filter.js",requires:[]},"liferay-search-facet-util":{path:"facet_util.js",requires:[]},"liferay-search-modified-facet":{path:"modified_facet.js",requires:["aui-form-validator","liferay-search-facet-util"]},"liferay-search-modified-facet-configuration":{path:"modified_facet_configuration.js",requires:["aui-node"]},"liferay-search-sort-configuration":{path:"sort_configuration.js",requires:["aui-node"]},"liferay-search-sort-util":{path:"sort_util.js",requires:[]}},root:MODULE_PATH+"/js/"}}}); } catch(error) {console.error(error);}try {var MODULE_MAIN='product-navigation-simulation-device@6.0.29/index';var MODULE_PATH='/o/product-navigation-simulation-device';AUI().applyConfig({groups:{"navigation-simulation-device":{base:MODULE_PATH+"/js/",combine:Liferay.AUI.getCombine(),filter:Liferay.AUI.getFilterConfig(),modules:{"liferay-product-navigation-simulation-device":{path:"product_navigation_simulation_device.js",requires:["aui-dialog-iframe-deprecated","aui-event-input","aui-modal","liferay-portlet-base","liferay-product-navigation-control-menu","liferay-util-window","liferay-widget-size-animation-plugin"]}},root:MODULE_PATH+"/js/"}}}); } catch(error) {console.error(error);}try {var MODULE_MAIN='@liferay/frontend-taglib@10.1.1/index';var MODULE_PATH='/o/frontend-taglib';AUI().applyConfig({groups:{"frontend-taglib":{base:MODULE_PATH+"/",combine:Liferay.AUI.getCombine(),filter:Liferay.AUI.getFilterConfig(),modules:{"liferay-management-bar":{path:"management_bar/js/management_bar.js",requires:["aui-component","liferay-portlet-base"]},"liferay-sidebar-panel":{path:"sidebar_panel/js/sidebar_panel.js",requires:["aui-base","aui-debounce","aui-parse-content","liferay-portlet-base"]}},root:MODULE_PATH+"/"}}}); } catch(error) {console.error(error);}try {var MODULE_MAIN='item-selector-taglib@5.3.1/index.es';var MODULE_PATH='/o/item-selector-taglib';AUI().applyConfig({groups:{"item-selector-taglib":{base:MODULE_PATH+"/",combine:Liferay.AUI.getCombine(),filter:Liferay.AUI.getFilterConfig(),modules:{"liferay-image-selector":{path:"image_selector/js/image_selector.js",requires:["aui-base","liferay-item-selector-dialog","liferay-portlet-base","uploader"]}},root:MODULE_PATH+"/"}}}); } catch(error) {console.error(error);}try {var MODULE_MAIN='dynamic-data-mapping-web@5.0.74/index';var MODULE_PATH='/o/dynamic-data-mapping-web';!function(){const a=Liferay.AUI;AUI().applyConfig({groups:{ddm:{base:MODULE_PATH+"/js/",combine:Liferay.AUI.getCombine(),filter:a.getFilterConfig(),modules:{"liferay-ddm-form":{path:"ddm_form.js",requires:["aui-base","aui-datatable","aui-datatype","aui-image-viewer","aui-parse-content","aui-set","aui-sortable-list","json","liferay-form","liferay-map-base","liferay-translation-manager","liferay-util-window"]},"liferay-portlet-dynamic-data-mapping":{condition:{trigger:"liferay-document-library"},path:"main.js",requires:["arraysort","aui-form-builder-deprecated","aui-form-validator","aui-map","aui-text-unicode","json","liferay-menu","liferay-translation-manager","liferay-util-window","text"]},"liferay-portlet-dynamic-data-mapping-custom-fields":{condition:{trigger:"liferay-document-library"},path:"custom_fields.js",requires:["liferay-portlet-dynamic-data-mapping"]}},root:MODULE_PATH+"/js/"}}})}(); } catch(error) {console.error(error);}try {var MODULE_MAIN='invitation-invite-members-web@5.0.26/index';var MODULE_PATH='/o/invitation-invite-members-web';AUI().applyConfig({groups:{"invite-members":{base:MODULE_PATH+"/invite_members/js/",combine:Liferay.AUI.getCombine(),filter:Liferay.AUI.getFilterConfig(),modules:{"liferay-portlet-invite-members":{path:"main.js",requires:["aui-base","autocomplete-base","datasource-io","datatype-number","liferay-portlet-base","liferay-util-window","node-core"]}},root:MODULE_PATH+"/invite_members/js/"}}}); } catch(error) {console.error(error);}try {var MODULE_MAIN='contacts-web@5.0.46/index';var MODULE_PATH='/o/contacts-web';AUI().applyConfig({groups:{contactscenter:{base:MODULE_PATH+"/js/",combine:Liferay.AUI.getCombine(),filter:Liferay.AUI.getFilterConfig(),modules:{"liferay-contacts-center":{path:"main.js",requires:["aui-io-plugin-deprecated","aui-toolbar","autocomplete-base","datasource-io","json-parse","liferay-portlet-base","liferay-util-window"]}},root:MODULE_PATH+"/js/"}}}); } catch(error) {console.error(error);}try {var MODULE_MAIN='exportimport-web@5.0.61/index';var MODULE_PATH='/o/exportimport-web';AUI().applyConfig({groups:{exportimportweb:{base:MODULE_PATH+"/",combine:Liferay.AUI.getCombine(),filter:Liferay.AUI.getFilterConfig(),modules:{"liferay-export-import-export-import":{path:"js/main.js",requires:["aui-datatype","aui-dialog-iframe-deprecated","aui-modal","aui-parse-content","aui-toggler","liferay-portlet-base","liferay-util-window"]}},root:MODULE_PATH+"/"}}}); } catch(error) {console.error(error);}try {var MODULE_MAIN='frontend-editor-alloyeditor-web@5.0.37/index';var MODULE_PATH='/o/frontend-editor-alloyeditor-web';AUI().applyConfig({groups:{alloyeditor:{base:MODULE_PATH+"/js/",combine:Liferay.AUI.getCombine(),filter:Liferay.AUI.getFilterConfig(),modules:{"liferay-alloy-editor":{path:"alloyeditor.js",requires:["aui-component","liferay-portlet-base","timers"]},"liferay-alloy-editor-source":{path:"alloyeditor_source.js",requires:["aui-debounce","liferay-fullscreen-source-editor","liferay-source-editor","plugin"]}},root:MODULE_PATH+"/js/"}}}); } catch(error) {console.error(error);}try {var MODULE_MAIN='staging-processes-web@5.0.41/index';var MODULE_PATH='/o/staging-processes-web';AUI().applyConfig({groups:{stagingprocessesweb:{base:MODULE_PATH+"/",combine:Liferay.AUI.getCombine(),filter:Liferay.AUI.getFilterConfig(),modules:{"liferay-staging-processes-export-import":{path:"js/main.js",requires:["aui-datatype","aui-dialog-iframe-deprecated","aui-modal","aui-parse-content","aui-toggler","liferay-portlet-base","liferay-util-window"]}},root:MODULE_PATH+"/"}}}); } catch(error) {console.error(error);}try {var MODULE_MAIN='@liferay/frontend-js-state-web@1.0.14/index';var MODULE_PATH='/o/frontend-js-state-web';AUI().applyConfig({groups:{state:{mainModule:MODULE_MAIN}}}); } catch(error) {console.error(error);}try {var MODULE_MAIN='@liferay/frontend-js-react-web@5.0.24/index';var MODULE_PATH='/o/frontend-js-react-web';AUI().applyConfig({groups:{react:{mainModule:MODULE_MAIN}}}); } catch(error) {console.error(error);}try {var MODULE_MAIN='frontend-js-components-web@2.0.44/index';var MODULE_PATH='/o/frontend-js-components-web';AUI().applyConfig({groups:{components:{mainModule:MODULE_MAIN}}}); } catch(error) {console.error(error);}try {var MODULE_MAIN='portal-workflow-task-web@5.0.53/index';var MODULE_PATH='/o/portal-workflow-task-web';AUI().applyConfig({groups:{workflowtasks:{base:MODULE_PATH+"/js/",combine:Liferay.AUI.getCombine(),filter:Liferay.AUI.getFilterConfig(),modules:{"liferay-workflow-tasks":{path:"main.js",requires:["liferay-util-window"]}},root:MODULE_PATH+"/js/"}}}); } catch(error) {console.error(error);}try {var MODULE_MAIN='@liferay/document-library-web@6.0.134/document_library/js/index';var MODULE_PATH='/o/document-library-web';AUI().applyConfig({groups:{dl:{base:MODULE_PATH+"/document_library/js/legacy/",combine:Liferay.AUI.getCombine(),filter:Liferay.AUI.getFilterConfig(),modules:{"document-library-upload-component":{path:"DocumentLibraryUpload.js",requires:["aui-component","aui-data-set-deprecated","aui-overlay-manager-deprecated","aui-overlay-mask-deprecated","aui-parse-content","aui-progressbar","aui-template-deprecated","liferay-search-container","querystring-parse-simple","uploader"]}},root:MODULE_PATH+"/document_library/js/legacy/"}}}); } catch(error) {console.error(error);}</script> <script data-senna-track="temporary" type="text/javascript"> // <![CDATA[ // ]]> </script> <script data-senna-track="permanent" id="googleAnalyticsScript" type="text/javascript"> (function(i, s, o, g, r, a, m) { i['GoogleAnalyticsObject'] = r; i[r] = i[r] || function() { var arrayValue = i[r].q || []; i[r].q = arrayValue; (i[r].q).push(arguments); }; i[r].l = 1 * new Date(); a = s.createElement(o); m = s.getElementsByTagName(o)[0]; a.async = 1; a.src = g; m.parentNode.insertBefore(a, m); })(window, document, 'script', '//www.google-analytics.com/analytics.js', 'ga'); ga('create', 'UA-38070491-1', 'auto'); ga('send', 'pageview'); Liferay.on( 'endNavigate', function(event) { ga('set', 'page', Liferay.ThemeDisplay.getLayoutRelativeURL()); ga('send', 'pageview'); } ); </script>  <script async src="https://www.googletagmanager.com/gtag/js?id=G-EYBQL8FHSN"></script> <script> window.dataLayer = window.dataLayer || []; function gtag(){dataLayer.push(arguments);} gtag('js', new Date()); gtag('config', 'G-3YY1XMR786'); </script> <link class="lfr-css-file" data-senna-track="temporary" href="https://www.bipm.org/o/bipm-theme/css/main.css?browserId=ie&themeId=bipmtheme_WAR_bipmtheme&minifierType=css&languageId=en_US&t=1732534532000" id="liferayThemeCSS" rel="stylesheet" type="text/css" /> <style data-senna-track="temporary" type="text/css"> .flag_right { height:50px; float:right; } b { font-weight: 700; } .portlet .asset-entries-group-label { font-size: 26px; line-height: 31px; } </style> <style data-senna-track="temporary" type="text/css"> #p_p_id_com_liferay_asset_publisher_web_portlet_AssetPublisherPortlet_INSTANCE_dFyK3vffnxwl_ .portlet-content { } #p_p_id_com_liferay_asset_publisher_web_portlet_AssetPublisherPortlet_INSTANCE_iI6AOQHGgc1H_ .portlet-content { } #p_p_id_com_liferay_journal_content_web_portlet_JournalContentPortlet_INSTANCE_bIP4JtoDG80Z_ .portlet-content { } #p_p_id_com_liferay_journal_content_web_portlet_JournalContentPortlet_INSTANCE_lGTtHEuHekGE_ .portlet-content { } #p_p_id_meetings_portlet_ .portlet-content { } </style> <link href="/o/commerce-frontend-js/styles/main.css" rel="stylesheet" type="text/css" /><style data-senna-track="temporary" type="text/css"> </style> <script> Liferay.Loader.require( '@liferay/frontend-js-state-web@1.0.14', function(FrontendJsState) { try { } catch (err) { console.error(err); } }); </script><script> Liferay.Loader.require( 'frontend-js-spa-web@5.0.35/init', function(frontendJsSpaWebInit) { try { (function() { frontendJsSpaWebInit.default({"navigationExceptionSelectors":":not([target=\"_blank\"]):not([data-senna-off]):not([data-resource-href]):not([data-cke-saved-href]):not([data-cke-saved-href])","cacheExpirationTime":-1,"clearScreensCache":true,"portletsBlacklist":["com_liferay_site_navigation_directory_web_portlet_SitesDirectoryPortlet","com_liferay_nested_portlets_web_portlet_NestedPortletsPortlet","com_liferay_questions_web_internal_portlet_QuestionsPortlet","com_liferay_account_admin_web_internal_portlet_AccountUsersRegistrationPortlet","com_liferay_portal_language_override_web_internal_portlet_PLOPortlet","com_liferay_login_web_portlet_LoginPortlet","com_liferay_login_web_portlet_FastLoginPortlet"],"validStatusCodes":[221,490,494,499,491,492,493,495,220],"debugEnabled":false,"loginRedirect":"","excludedPaths":["/c/document_library","/documents","/image"],"userNotification":{"message":"It looks like this is taking longer than expected.","title":"Oops","timeout":30000},"requestTimeout":0}) })(); } catch (err) { console.error(err); } }); </script> <script data-senna-track="temporary" type="text/javascript"> if (window.Analytics) { window._com_liferay_document_library_analytics_isViewFileEntry = false; } </script> <script type="text/javascript"> Liferay.on( 'ddmFieldBlur', function(event) { if (window.Analytics) { Analytics.send( 'fieldBlurred', 'Form', { fieldName: event.fieldName, focusDuration: event.focusDuration, formId: event.formId, page: event.page } ); } } ); Liferay.on( 'ddmFieldFocus', function(event) { if (window.Analytics) { Analytics.send( 'fieldFocused', 'Form', { fieldName: event.fieldName, formId: event.formId, page: event.page } ); } } ); Liferay.on( 'ddmFormPageShow', function(event) { if (window.Analytics) { Analytics.send( 'pageViewed', 'Form', { formId: event.formId, page: event.page, title: event.title } ); } } ); Liferay.on( 'ddmFormSubmit', function(event) { if (window.Analytics) { Analytics.send( 'formSubmitted', 'Form', { formId: event.formId, title: event.title } ); } } ); Liferay.on( 'ddmFormView', function(event) { if (window.Analytics) { Analytics.send( 'formViewed', 'Form', { formId: event.formId, title: event.title } ); } } ); </script><script> </script> <script data-senna-track="permanent" src="https://www.bipm.org/o/bipm-theme/js/bipm.js"></script> <script data-senna-track="permanent" src="https://www.bipm.org/o/bipm-theme/js/vendor/jquery.sticky.js"></script> <script data-senna-track="permanent" src="https://www.bipm.org/o/bipm-theme/js/vendor/jquery-ui.min.js"></script> </head> <body class="controls-visible ie yui3-skin-sam guest-site signed-out public-page site bipm"> <nav aria-label="Quick Links" class="bg-dark cadmin d-lg-block d-none quick-access-nav text-center text-white" id="vbzy_quickAccessNav"> <ul class="list-unstyled mb-0"> <li> <a class="d-block p-2 sr-only sr-only-focusable text-reset" href="#main-content"> Skip to Content </a> </li> </ul> </nav> <div id="wrapper"> <style> @media screen and (min-width: 992px) { body.bipm #wrapper #banner { background-image: url(/documents/portlet_file_entry/20126/NPL7.png.jpg/698b00c9-5d8f-1121-3dca-8f83d4e770d5?download=true) } } @media screen and (max-width: 991px) { body.bipm #wrapper #banner { background-image: url(/documents/portlet_file_entry/20126/NPL7.png.jpg/698b00c9-5d8f-1121-3dca-8f83d4e770d5?download=true) } } @media screen and (max-width: 991px) { body.bipm #wrapper #banner video.bg-video{ display: none; } } </style> <header id="banner" class="header " role="banner"> <div class="container"> <div class="row align-items-lg-center"> <div class="col-12 col-lg-3"> <div class="site-title"> <img class="header__logo" src="https://www.bipm.org/o/bipm-theme/images/logo.png"/> </div> </div> <div class="col-12 col-lg-9"> <div id="secondary-nav" class="header-second-nav"> <ul class="header-second-nav__list"> <li class="header-second-nav__items header-second-nav__items--connexion connexion"> <div class="sign-in-header" data-dismiss="modal" data-toggle="modal" data-target="#second-nav-sign-in"> <p class="header-second-nav__content">Sign in</p> <div class="header-second-nav__picto"></div> </div> </li> <li class="header-second-nav__items header-second-nav__items--metrology metrology-areas-header" data-dismiss="modal" data-toggle="modal" data-target="#second-nav-metrology"> <p class="header-second-nav__content">Metrology areas</p> <div class="header-second-nav__picto"></div> </li> <li class="header-second-nav__items header-second-nav__items--quicks quick-links-header" data-dismiss="modal" data-toggle="modal" data-target="#second-nav-quicklinks"> <p class="header-second-nav__content">Quick links</p> <div class="header-second-nav__picto"></div> </li> <li class="header-second-nav__items header-second-nav__items--languages languages-header"> <div class="portlet-content"> <a class="language-entry-long-text" href="/fr/committees/cc/ccl"> français </a> </div> </li> </ul> </div> </div> </div> <div class="row justify-content-center"> <div class="col-12 col-lg-6"> <p class="header__intro"> Coordinating the world-wide measurement system to ensure comparable and internationally accepted measurement results </p> </div> </div> <div id="main-nav-sticky-wrapper" class="sticky-wrapper"> <nav id="main-nav" class="main-nav navbar navbar-expand-lg"> <div> <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarPrimary" aria-controls="navbarPrimary" aria-expanded="false" aria-label="Toggle navigation"> <img src="https://www.bipm.org/o/bipm-theme/images/picto/picto-burger-white.svg" class="navbar-toggler--sticky"/> <img src="https://www.bipm.org/o/bipm-theme/images/picto/picto-burger-blue.svg" class="navbar-toggler--nosticky"/> <span class="navbar-brand">Menu</span> </button> </div> <div> <ul class="navbar-menu-xs"> <li class="navbar-menu-xs__nav-item"> <a href="/search" class="navbar-menu-xs__nav-link"> <img src="https://www.bipm.org/o/bipm-theme/images/search-blue.png" class="navbar-menu-xs__nav-img navbar-menu-xs__nav-img--blue"/> <img src="https://www.bipm.org/o/bipm-theme/images/search-white.png" class="navbar-menu-xs__nav-img navbar-menu-xs__nav-img--white"/> </a> </li> <li class="navbar-menu-xs__nav-item"> <button class="navbar-menu-xs__nav-link" type="button" data-dismiss="modal" data-toggle="modal" data-target="#second-nav-sign-in"> <img src="https://www.bipm.org/o/bipm-theme/images/picto/picto-user-blue.svg" class="navbar-menu-xs__nav-img navbar-menu-xs__nav-img--blue"/> <img src="https://www.bipm.org/o/bipm-theme/images/picto/picto-user-white.svg" class="navbar-menu-xs__nav-img navbar-menu-xs__nav-img--white"/> </button> </li> <li class="navbar-menu-xs__nav-item navbar-menu-xs__nav-item--lang"> <div class="portlet-content"> <a class="language-entry-long-text" href="/fr/committees/cc/ccl"> français </a> </div> </li> </ul> </div> <div class="collapse navbar-collapse" id="navbarPrimary"> <div class="navbar-collapse__header"> <div> <button class="navbar-collapse__close" type="button" type="button" data-toggle="collapse" data-target="#navbarPrimary" aria-controls="navbarPrimary" aria-expanded="false" aria-label="Toggle navigation"> <img src="https://www.bipm.org/o/bipm-theme/images/picto/picto-close.svg" /> </button> </div> <div> <ul class="navbar-collapse__nav"> <li class="navbar-collapse__nav-item"> <a href="/search" class="navbar-collapse__nav-link"> <img src="https://www.bipm.org/o/bipm-theme/images/search-blue.png" class="navbar-collapse__nav-img navbar-collapse__nav-img--blue"/> <img src="https://www.bipm.org/o/bipm-theme/images/search-white.png" class="navbar-collapse__nav-img navbar-collapse__nav-img--white"/> </a> </li> <li class="navbar-collapse__nav-item"> <button class="navbar-collapse__nav-link" type="button" data-dismiss="modal" data-toggle="modal" data-target="#second-nav-sign-in"> <img src="https://www.bipm.org/o/bipm-theme/images/picto/picto-user-blue.svg" class="navbar-collapse__nav-img navbar-collapse__nav-img--blue"/> <img src="https://www.bipm.org/o/bipm-theme/images/picto/picto-user-white.svg" class="navbar-collapse__nav-img navbar-collapse__nav-img--white"/> </button> </li> <li class="navbar-collapse__nav-item navbar-collapse__nav-item--lang"> <div class="portlet-content"> <a class="language-entry-long-text" href="/fr/committees/cc/ccl"> français </a> </div> </li> </ul> </div> </div> <div id="logo-sticky" class="logo-sticky"> <a href="/" class="logo-sticky__link"> <img src="https://www.bipm.org/o/bipm-theme/images/BIPM-logo-midi-white.png" class="logo-sticky__img logo-sticky__img--white" /> <img src="https://www.bipm.org/o/bipm-theme/images/BIPM-logo-midi-yellow.png" class="logo-sticky__img logo-sticky__img--yellow" /> </a> </div> <div class="nav-home main-nav__home"> <a href="/" class="nav-home__link"> <div class="nav-home__link-picto"></div> <span>Home</span> </a> </div> <div class="portlet-boundary portlet-boundary_com_liferay_site_navigation_menu_web_portlet_SiteNavigationMenuPortlet_ portlet-static portlet-static-end portlet-barebone portlet-navigation " id="p_p_id_com_liferay_site_navigation_menu_web_portlet_SiteNavigationMenuPortlet_INSTANCE_BipmMainMenuNavigation_"> <span id="p_com_liferay_site_navigation_menu_web_portlet_SiteNavigationMenuPortlet_INSTANCE_BipmMainMenuNavigation"></span> <section class="portlet" id="portlet_com_liferay_site_navigation_menu_web_portlet_SiteNavigationMenuPortlet_INSTANCE_BipmMainMenuNavigation"> <div class="portlet-content"> <div class=" portlet-content-container"> <div class="portlet-body"> <div id="navbar_com_liferay_site_navigation_menu_web_portlet_SiteNavigationMenuPortlet_INSTANCE_BipmMainMenuNavigation"> <ul aria-label="Site Pages" class="navbar-nav nav" role="menubar"> <li class="nav-item dropdown " id="mainMenu1"> <a data-regularURL="https://www.bipm.org/en/about-us" data-resetURL="https://www.bipm.org/en/about-us" data-friendlyUrl="/about-us" id="layout_55753" aria-haspopup='true' class="nav-link dropdown-toggle nav-link__primary nav-link__primary--no-child submenu-link" href='https://www.bipm.org/en/about-us' > About us </a> <div class="dropdown-menu cols-3" id="menu-mainMenu1" data-parent="#mainMenu1"> <div class="navbar-collapse__subheader"> <button type="button" class="navbar-collapse__return" data-toggle="collapse" data-target="#55753"></button> <p class="navbar-collapse__titlechild"> About us </p> </div> <div class="dropdown-group"> <a class="dropdown-item nav-link__primary" href="https://www.bipm.org/en/working-together"> Benefits of participation </a> <div class="dropdown-submenu " id="layout_4570284"> <a type="button" href="#" class="dropdown-item dropdown-toggle d-lg-none" >Benefits of participation</a> <ul class="dropdown-menu"> <li class=" d-lg-none"> <a class="dropdown-item" href="https://www.bipm.org/en/working-together">Page Benefits of participation</a> </li> <li class=" nav-item"> <a class="dropdown-item" href="https://www.bipm.org/en/member-states" > Member States </a> </li> <li class=" nav-item"> <a class="dropdown-item" href="https://www.bipm.org/en/associates" > Associates </a> </li> <li class=" nav-item"> <a class="dropdown-item" href="https://www.bipm.org/en/how-to-join" > How to join us </a> </li> </ul> </div> </div> <div class="dropdown-group"> <a class="dropdown-item nav-link__primary" href="https://www.bipm.org/en/governance"> Governance </a> <div class="dropdown-submenu " id="layout_2899556"> <a type="button" href="#" class="dropdown-item dropdown-toggle d-lg-none" >Governance</a> <ul class="dropdown-menu"> <li class=" d-lg-none"> <a class="dropdown-item" href="https://www.bipm.org/en/governance">Page Governance</a> </li> <li class=" nav-item"> <a class="dropdown-item" href="https://www.bipm.org/en/committees/ci/cipm" > CIPM </a> </li> <li class=" nav-item"> <a class="dropdown-item" href="https://www.bipm.org/en/committees/cg/cgpm" > CGPM </a> </li> <li class=" nav-item"> <a class="dropdown-item" href="https://www.bipm.org/en/founding-documents" > Founding documents </a> </li> <li class=" nav-item"> <a class="dropdown-item" href="https://www.bipm.org/en/strategy" > Strategy </a> </li> </ul> </div> </div> <div class="dropdown-group"> <a class="dropdown-item nav-link__primary" href="https://www.bipm.org/en/mission-objectives"> Our Mission and Objectives </a> <div class="dropdown-submenu " id="layout_26946619"> <a type="button" href="#" class="dropdown-item dropdown-toggle d-lg-none" >Our Mission and Objectives</a> <ul class="dropdown-menu"> <li class=" d-lg-none"> <a class="dropdown-item" href="https://www.bipm.org/en/mission-objectives">Page Our Mission and Objectives</a> </li> <li class=" nav-item"> <a class="dropdown-item" href="https://www.bipm.org/en/work-programme" > Our work programme </a> </li> <li class=" nav-item"> <a class="dropdown-item" href="https://www.bipm.org/en/committees/cb/cbkt" > Knowledge transfer (CBKT) </a> </li> <li class=" nav-item"> <a class="dropdown-item" href="https://www.bipm.org/en/bipm-staff" > Staff of the BIPM Headquarters </a> </li> <li class=" nav-item"> <a class="dropdown-item" href="/opportunities" data-senna-off="true"> Jobs and opportunities </a> </li> <li class=" nav-item"> <a class="dropdown-item" href="https://www.bipm.org/en/how-to-get-to-the-bipm" > How to get to the BIPM </a> </li> </ul> </div> </div> <div class="dropdown-group"> <a class="dropdown-item nav-link__primary" href="https://www.bipm.org/en/historical-information"> Historical information </a> <div class="dropdown-submenu " id="layout_3406818"> <a type="button" href="#" class="dropdown-item dropdown-toggle d-lg-none" >Historical information</a> <ul class="dropdown-menu"> <li class=" d-lg-none"> <a class="dropdown-item" href="https://www.bipm.org/en/historical-information">Page Historical information</a> </li> <li class=" nav-item"> <a class="dropdown-item" href="https://www.bipm.org/en/history-si" > Evolution of the SI </a> </li> <li class=" nav-item"> <a class="dropdown-item" href="https://www.bipm.org/en/metre-convention" > Metre Convention </a> </li> <li class=" nav-item"> <a class="dropdown-item" href="https://www.bipm.org/en/pavillon-de-breteuil" > Pavillon de Breteuil </a> </li> </ul> </div> </div> </div> </li> <li class="nav-item highlighted" id="mainMenu2"> <a data-regularURL="https://www.bipm.org/en/bipm-anniversary" data-resetURL="https://www.bipm.org/en/bipm-anniversary" data-target="" data-friendlyUrl="/bipm-anniversary" id="layout_262765300" class="nav-link" href='https://www.bipm.org/en/bipm-anniversary' > 150th anniversary </a> </li> <li class="nav-item dropdown " id="mainMenu3"> <a data-regularURL="https://www.bipm.org/en/coordination" data-resetURL="https://www.bipm.org/en/coordination" data-friendlyUrl="/coordination" id="layout_58801" aria-haspopup='true' class="nav-link dropdown-toggle nav-link__primary nav-link__primary--no-child submenu-link" href='https://www.bipm.org/en/coordination' > Coordination </a> <div class="dropdown-menu cols-3" id="menu-mainMenu3" data-parent="#mainMenu3"> <div class="navbar-collapse__subheader"> <button type="button" class="navbar-collapse__return" data-toggle="collapse" data-target="#58801"></button> <p class="navbar-collapse__titlechild"> Coordination </p> </div> <div class="dropdown-group"> <a class="dropdown-item nav-link__primary" href="https://www.bipm.org/en/cipm-mra"> CIPM MRA </a> <div class="dropdown-submenu " id="layout_43768249"> <a type="button" href="#" class="dropdown-item dropdown-toggle d-lg-none" >CIPM MRA</a> <ul class="dropdown-menu"> <li class=" d-lg-none"> <a class="dropdown-item" href="https://www.bipm.org/en/cipm-mra">Page CIPM MRA</a> </li> <li class=" nav-item"> <a class="dropdown-item" href="https://www.bipm.org/en/cipm-mra/participation" > Participating laboratories </a> </li> <li class=" nav-item"> <a class="dropdown-item" href="https://www.bipm.org/en/cipm-mra/logo" > Use of the CIPM MRA logo </a> </li> <li class=" nav-item"> <a class="dropdown-item" href="https://www.bipm.org/en/cipm-mra/cipm-mra-documents" > Documents on the CIPM MRA </a> </li> <li class=" nav-item"> <a class="dropdown-item" href="https://www.bipm.org/en/cipm-mra/cmc-approval-process" > CMC approval process </a> </li> <li class=" nav-item"> <a class="dropdown-item" href="https://www.bipm.org/en/committees/jc/jcrb" > JCRB </a> </li> <li class=" nav-item"> <a class="dropdown-item" href="https://www.bipm.org/kcdb" data-senna-off="true"> KCDB >> </a> </li> <li class=" nav-item"> <a class="dropdown-item" href="https://www.bipm.org/en/cipm-mra/kcdb-help" > Help on the KCDB </a> </li> </ul> </div> </div> <div class="dropdown-group"> <a class="dropdown-item nav-link__primary" href="https://www.bipm.org/en/committees/fo"> CIPM Forums </a> <div class="dropdown-submenu " id="layout_185895991"> <a type="button" href="#" class="dropdown-item dropdown-toggle d-lg-none" >CIPM Forums</a> <ul class="dropdown-menu"> <li class=" d-lg-none"> <a class="dropdown-item" href="https://www.bipm.org/en/committees/fo">Page CIPM Forums</a> </li> <li class=" nav-item"> <a class="dropdown-item" href="https://www.bipm.org/en/committees/ci/cipm/wg/cipm-stg-cenv" > Climate change and environment </a> </li> <li class=" nav-item"> <a class="dropdown-item" href="https://www.bipm.org/en/committees/fo/forum-md" > Metrology and Digitalization </a> </li> </ul> </div> </div> <div class="dropdown-group"> <a class="dropdown-item nav-link__primary" href="https://www.bipm.org/en/committees/cc"> CIPM Consultative Committees </a> <div class="dropdown-submenu " id="layout_1072739"> <a type="button" href="#" class="dropdown-item dropdown-toggle d-lg-none" >CIPM Consultative Committees</a> <ul class="dropdown-menu"> <li class=" d-lg-none"> <a class="dropdown-item" href="https://www.bipm.org/en/committees/cc">Page CIPM Consultative Committees</a> </li> <li class=" nav-item"> <a class="dropdown-item" href="https://www.bipm.org/en/committees/cc/ccauv" > CCAUV </a> </li> <li class=" nav-item"> <a class="dropdown-item" href="https://www.bipm.org/en/committees/cc/ccem" > CCEM </a> </li> <li class="active nav-item"> <a class="dropdown-item" href="https://www.bipm.org/en/committees/cc/ccl" > CCL </a> </li> <li class=" nav-item"> <a class="dropdown-item" href="https://www.bipm.org/en/committees/cc/ccm" > CCM </a> </li> <li class=" nav-item"> <a class="dropdown-item" href="https://www.bipm.org/en/committees/cc/ccpr" > CCPR </a> </li> <li class=" nav-item"> <a class="dropdown-item" href="https://www.bipm.org/en/committees/cc/ccqm" > CCQM </a> </li> <li class=" nav-item"> <a class="dropdown-item" href="https://www.bipm.org/en/committees/cc/ccri" > CCRI </a> </li> <li class=" nav-item"> <a class="dropdown-item" href="https://www.bipm.org/en/committees/cc/cct" > CCT </a> </li> <li class=" nav-item"> <a class="dropdown-item" href="https://www.bipm.org/en/committees/cc/cctf" > CCTF </a> </li> <li class=" nav-item"> <a class="dropdown-item" href="https://www.bipm.org/en/committees/cc/ccu" > CCU </a> </li> </ul> </div> </div> <div class="dropdown-group"> <a class="dropdown-item nav-link__primary" href="https://www.bipm.org/en/committees/jc/jcgm"> Guides in Metrology Committee: JCGM </a> <div class="dropdown-submenu " id="layout_2717479"> <a type="button" href="#" class="dropdown-item dropdown-toggle d-lg-none" >Guides in Metrology Committee: JCGM</a> <ul class="dropdown-menu"> <li class=" d-lg-none"> <a class="dropdown-item" href="https://www.bipm.org/en/committees/jc/jcgm">Page Guides in Metrology Committee: JCGM</a> </li> <li class=" nav-item"> <a class="dropdown-item" href="https://www.bipm.org/en/jcgm-wg1-gum" > JCGM-WG1 (GUM) </a> </li> <li class=" nav-item"> <a class="dropdown-item" href="https://www.bipm.org/en/jcgm-wg2-vim" > JCGM-WG2 (VIM) </a> </li> </ul> </div> </div> <div class="dropdown-group"> <a class="dropdown-item nav-link__primary" href="https://www.bipm.org/en/international-reference-time-scales"> International reference time scales </a> <div class="dropdown-submenu " id="layout_51244397"> <a type="button" href="#" class="dropdown-item dropdown-toggle d-lg-none" >International reference time scales</a> <ul class="dropdown-menu"> <li class=" d-lg-none"> <a class="dropdown-item" href="https://www.bipm.org/en/international-reference-time-scales">Page International reference time scales</a> </li> <li class=" nav-item"> <a class="dropdown-item" href="https://www.bipm.org/en/time-ftp" > Time FTP Server </a> </li> <li class=" nav-item"> <a class="dropdown-item" href="https://webtai.bipm.org" data-senna-off="true"> Time Department Database </a> </li> </ul> </div> </div> <div class="dropdown-group"> <a class="dropdown-item nav-link__primary" href="https://www.bipm.org/en/committees/jc/jctlm"> Laboratory medicine: JCTLM </a> <div class="dropdown-submenu " id="layout_2717482"> <a type="button" href="#" class="dropdown-item dropdown-toggle d-lg-none" >Laboratory medicine: JCTLM</a> <ul class="dropdown-menu"> <li class=" d-lg-none"> <a class="dropdown-item" href="https://www.bipm.org/en/committees/jc/jctlm">Page Laboratory medicine: JCTLM</a> </li> <li class=" nav-item"> <a class="dropdown-item" href="https://www.bipm.org/jctlm/" data-senna-off="true"> JCTLM Database >> </a> </li> <li class=" nav-item"> <a class="dropdown-item" href="https://www.jctlm.org/" data-senna-off="true"> JCTLM portal >> </a> </li> </ul> </div> </div> </div> </li> <li class="nav-item dropdown " id="mainMenu4"> <a data-regularURL="https://www.bipm.org/en/liaison" data-resetURL="https://www.bipm.org/en/liaison" data-friendlyUrl="/liaison" id="layout_58805" aria-haspopup='true' class="nav-link dropdown-toggle nav-link__primary nav-link__primary--no-child submenu-link" href='https://www.bipm.org/en/liaison' > Liaison </a> <div class="dropdown-menu cols-3" id="menu-mainMenu4" data-parent="#mainMenu4"> <div class="navbar-collapse__subheader"> <button type="button" class="navbar-collapse__return" data-toggle="collapse" data-target="#58805"></button> <p class="navbar-collapse__titlechild"> Liaison </p> </div> <div class="dropdown-group"> <a class="dropdown-item nav-link__primary" href="https://www.bipm.org/en/institutional-liaison"> Institutional liaisons </a> <div class="dropdown-submenu " id="layout_3401301"> <a type="button" href="#" class="dropdown-item dropdown-toggle d-lg-none" >Institutional liaisons</a> <ul class="dropdown-menu"> <li class=" d-lg-none"> <a class="dropdown-item" href="https://www.bipm.org/en/institutional-liaison">Page Institutional liaisons</a> </li> <li class=" nav-item"> <a class="dropdown-item" href="https://www.bipm.org/en/liaison-partners/alphabetical-list" > Alphabetical list </a> </li> <li class=" nav-item"> <a class="dropdown-item" href="https://www.bipm.org/en/liaison/mou" > Formal agreements </a> </li> <li class=" nav-item"> <a class="dropdown-item" href="https://www.bipm.org/en/liaison/digital-transformation" > Digital transformation </a> </li> <li class=" nav-item"> <a class="dropdown-item" href="https://www.bipm.org/en/liaison/quality-infrastructure" > Quality infrastructure </a> </li> <li class=" nav-item"> <a class="dropdown-item" href="https://www.bipm.org/en/liaison/technical" > Technical liaisons </a> </li> </ul> </div> </div> <div class="dropdown-group"> <a class="dropdown-item nav-link__primary nav-link__primary--no-child" href="https://www.bipm.org/en/hosting/codata-tgfc"> CODATA-TGFC </a> </div> <div class="dropdown-group"> <a class="dropdown-item nav-link__primary" href="https://www.bipm.org/en/committees/jc"> Joint Committees </a> <div class="dropdown-submenu " id="layout_37047832"> <a type="button" href="#" class="dropdown-item dropdown-toggle d-lg-none" >Joint Committees</a> <ul class="dropdown-menu"> <li class=" d-lg-none"> <a class="dropdown-item" href="https://www.bipm.org/en/committees/jc">Page Joint Committees</a> </li> <li class=" nav-item"> <a class="dropdown-item" href="https://www.bipm.org/en/committees/jc/jcgm" > Guides in Metrology Committee: JCGM </a> </li> <li class=" nav-item"> <a class="dropdown-item" href="https://www.bipm.org/en/committees/jc/jctlm" > Laboratory medicine: JCTLM </a> </li> <li class=" nav-item"> <a class="dropdown-item" href="https://www.bipm.org/en/jcrb" > CIPM MRA: JCRB </a> </li> </ul> </div> </div> <div class="dropdown-group"> <a class="dropdown-item nav-link__primary nav-link__primary--no-child" href="https://www.bipm.org/en/committees/di/partners"> NMI Directors and Member State Representatives </a> </div> <div class="dropdown-group"> <a class="dropdown-item nav-link__primary" href="https://www.bipm.org/en/liaison/regional"> Regional metrology organizations </a> <div class="dropdown-submenu " id="layout_36869602"> <a type="button" href="#" class="dropdown-item dropdown-toggle d-lg-none" >Regional metrology organizations</a> <ul class="dropdown-menu"> <li class=" d-lg-none"> <a class="dropdown-item" href="https://www.bipm.org/en/liaison/regional">Page Regional metrology organizations</a> </li> <li class=" nav-item"> <a class="dropdown-item" href="https://www.bipm.org/en/liaison/regional/afrimets" > AFRIMETS </a> </li> <li class=" nav-item"> <a class="dropdown-item" href="https://www.bipm.org/en/liaison/regional/apmp" > APMP </a> </li> <li class=" nav-item"> <a class="dropdown-item" href="https://www.bipm.org/en/liaison/regional/coomet" > COOMET </a> </li> <li class=" nav-item"> <a class="dropdown-item" href="https://www.bipm.org/en/liaison/regional/euramet" > EURAMET </a> </li> <li class=" nav-item"> <a class="dropdown-item" href="https://www.bipm.org/en/liaison/regional/gulfmet" > GULFMET </a> </li> <li class=" nav-item"> <a class="dropdown-item" href="https://www.bipm.org/en/liaison/regional/sim" > SIM </a> </li> <li class=" nav-item"> <a class="dropdown-item" href="https://www.bipm.org/en/toolbox" > Toolbox </a> </li> </ul> </div> </div> </div> </li> <li class="nav-item dropdown " id="mainMenu5"> <a data-regularURL="https://www.bipm.org/en/technical-scientific" data-resetURL="https://www.bipm.org/en/technical-scientific" data-friendlyUrl="/technical-scientific" id="layout_58809" aria-haspopup='true' class="nav-link dropdown-toggle nav-link__primary nav-link__primary--no-child submenu-link" href='https://www.bipm.org/en/technical-scientific' > Technical/Scientific </a> <div class="dropdown-menu cols-2" id="menu-mainMenu5" data-parent="#mainMenu5"> <div class="navbar-collapse__subheader"> <button type="button" class="navbar-collapse__return" data-toggle="collapse" data-target="#58809"></button> <p class="navbar-collapse__titlechild"> Technical/Scientific </p> </div> <div class="dropdown-group"> <a class="dropdown-item nav-link__primary" href="https://www.bipm.org/en/measurement-units"> The SI </a> <div class="dropdown-submenu " id="layout_42087691"> <a type="button" href="#" class="dropdown-item dropdown-toggle d-lg-none" >The SI</a> <ul class="dropdown-menu"> <li class=" d-lg-none"> <a class="dropdown-item" href="https://www.bipm.org/en/measurement-units">Page The SI</a> </li> <li class=" nav-item"> <a class="dropdown-item" href="https://www.bipm.org/en/measurement-units/si-defining-constants" > Defining constants </a> </li> <li class=" nav-item"> <a class="dropdown-item" href="https://www.bipm.org/en/measurement-units/si-base-units" > SI base units </a> </li> <li class=" nav-item"> <a class="dropdown-item" href="https://www.bipm.org/en/measurement-units/si-prefixes" > SI prefixes </a> </li> <li class=" nav-item"> <a class="dropdown-item" href="https://www.bipm.org/en/publications/mises-en-pratique" > Practical realizations </a> </li> <li class=" nav-item"> <a class="dropdown-item" href="https://www.bipm.org/en/publications/si-brochure" > SI Brochure </a> </li> <li class=" nav-item"> <a class="dropdown-item" href="https://www.bipm.org/en/measurement-units/si-promotion" > SI promotion </a> </li> <li class=" nav-item"> <a class="dropdown-item" href="https://www.bipm.org/en/redefinition-second" > Redefinition of the second </a> </li> </ul> </div> </div> <div class="dropdown-group"> <a class="dropdown-item nav-link__primary" href="https://www.bipm.org/en/technical-areas"> Technical areas of the BIPM </a> <div class="dropdown-submenu " id="layout_51930736"> <a type="button" href="#" class="dropdown-item dropdown-toggle d-lg-none" >Technical areas of the BIPM</a> <ul class="dropdown-menu"> <li class=" d-lg-none"> <a class="dropdown-item" href="https://www.bipm.org/en/technical-areas">Page Technical areas of the BIPM</a> </li> <li class=" nav-item"> <a class="dropdown-item" href="https://www.bipm.org/en/electrical-metrology" > Electrical metrology </a> </li> <li class=" nav-item"> <a class="dropdown-item" href="https://www.bipm.org/en/gas-metrology" > Gas metrology </a> </li> <li class=" nav-item"> <a class="dropdown-item" href="https://www.bipm.org/en/mass-metrology" > Mass metrology </a> </li> <li class=" nav-item"> <a class="dropdown-item" href="https://www.bipm.org/en/organic-analysis" > Organic analysis </a> </li> <li class=" nav-item"> <a class="dropdown-item" href="https://www.bipm.org/en/dosimetry" > Radiation dosimetry </a> </li> <li class=" nav-item"> <a class="dropdown-item" href="https://www.bipm.org/en/radionuclide-metrology" > Radionuclide metrology </a> </li> <li class=" nav-item"> <a class="dropdown-item" href="https://www.bipm.org/en/time-metrology" > Time metrology </a> </li> </ul> </div> </div> </div> </li> <li class="nav-item dropdown " id="mainMenu6"> <a data-regularURL="https://www.bipm.org/en/publications-events" data-resetURL="https://www.bipm.org/en/publications-events" data-friendlyUrl="/publications-events" id="layout_58813" aria-haspopup='true' class="nav-link dropdown-toggle nav-link__primary nav-link__primary--no-child submenu-link" href='https://www.bipm.org/en/publications-events' > Publications & Events </a> <div class="dropdown-menu cols-3" id="menu-mainMenu6" data-parent="#mainMenu6"> <div class="navbar-collapse__subheader"> <button type="button" class="navbar-collapse__return" data-toggle="collapse" data-target="#58813"></button> <p class="navbar-collapse__titlechild"> Publications & Events </p> </div> <div class="dropdown-group"> <a class="dropdown-item nav-link__primary" href="https://www.bipm.org/en/publications"> Publications </a> <div class="dropdown-submenu " id="layout_52384896"> <a type="button" href="#" class="dropdown-item dropdown-toggle d-lg-none" >Publications</a> <ul class="dropdown-menu"> <li class=" d-lg-none"> <a class="dropdown-item" href="https://www.bipm.org/en/publications">Page Publications</a> </li> <li class=" nav-item"> <a class="dropdown-item" href="https://www.bipm.org/en/publications/annual-review" > Annual Review </a> </li> <li class=" nav-item"> <a class="dropdown-item" href="/committees/cg/cgpm/publications" data-senna-off="true"> CGPM: Proceedings </a> </li> <li class=" nav-item"> <a class="dropdown-item" href="/committees/ci/cipm/publications" data-senna-off="true"> CIPM: Publications </a> </li> <li class=" nav-item"> <a class="dropdown-item" href="https://www.bipm.org/en/cipm-mra/cipm-mra-documents" > Documents on the CIPM MRA </a> </li> <li class=" nav-item"> <a class="dropdown-item" href="https://www.bipm.org/en/publications/financial-report" > Financial Report </a> </li> <li class=" nav-item"> <a class="dropdown-item" href="https://www.bipm.org/en/publications/notification" > Notification </a> </li> <li class=" nav-item"> <a class="dropdown-item" href="https://www.bipm.org/en/publications/guides" > Guides in Metrology (GUM and VIM) </a> </li> <li class=" nav-item"> <a class="dropdown-item" href="https://iopscience.iop.org/journal/0026-1394" > Metrologia </a> </li> <li class=" nav-item"> <a class="dropdown-item" href="https://www.bipm.org/en/publications/monographies" > Monographies BIPM </a> </li> <li class=" nav-item"> <a class="dropdown-item" href="https://www.bipm.org/en/publications/mises-en-pratique" > Practical realizations </a> </li> <li class=" nav-item"> <a class="dropdown-item" href="https://www.bipm.org/en/publications/rapports-bipm" > Rapports BIPM </a> </li> <li class=" nav-item"> <a class="dropdown-item" href="https://www.bipm.org/en/scientific-output" > Scientific output </a> </li> <li class=" nav-item"> <a class="dropdown-item" href="https://www.bipm.org/en/publications/si-brochure" > SI Brochure </a> </li> <li class=" nav-item"> <a class="dropdown-item" href="https://www.bipm.org/en/standard-frequencies" > Standard frequencies </a> </li> <li class=" nav-item"> <a class="dropdown-item" href="https://www.bipm.org/en/time-scale" > Time scales and related data </a> </li> </ul> </div> </div> <div class="dropdown-group"> <a class="dropdown-item nav-link__primary" href="https://www.bipm.org/en/metrology-resources"> Metrology resources </a> <div class="dropdown-submenu " id="layout_44313443"> <a type="button" href="#" class="dropdown-item dropdown-toggle d-lg-none" >Metrology resources</a> <ul class="dropdown-menu"> <li class=" d-lg-none"> <a class="dropdown-item" href="https://www.bipm.org/en/metrology-resources">Page Metrology resources</a> </li> <li class=" nav-item"> <a class="dropdown-item" href="https://www.bipm.org/en/digital-transformation" > Digital Transformation </a> </li> <li class=" nav-item"> <a class="dropdown-item" href="https://e-learning.bipm.org/" data-senna-off="true"> e-Learning Platform >> </a> </li> <li class=" nav-item"> <a class="dropdown-item" href="https://www.bipm.org/en/impact-studies" > Impact Studies </a> </li> <li class=" nav-item"> <a class="dropdown-item" href="https://www.bipm.org/jctlm/" data-senna-off="true"> JCTLM Database >> </a> </li> <li class=" nav-item"> <a class="dropdown-item" href="https://www.bipm.org/kcdb/" data-senna-off="true"> KCDB - CIPM MRA Database </a> </li> <li class=" nav-item"> <a class="dropdown-item" href="https://www.bipm.org/en/metrology-in-the-fight-against-covid-19" > Metrology in the fight against Covid-19 </a> </li> <li class=" nav-item"> <a class="dropdown-item" href="https://www.bipm.org/en/ftp-server" > Time scales - BIPM FTP server </a> </li> <li class=" nav-item"> <a class="dropdown-item" href="https://webtai.bipm.org" data-senna-off="true"> Time Department Database </a> </li> </ul> </div> </div> <div class="dropdown-group"> <a class="dropdown-item nav-link__primary" href="https://www.bipm.org/en/events"> Events </a> <div class="dropdown-submenu " id="layout_44196745"> <a type="button" href="#" class="dropdown-item dropdown-toggle d-lg-none" >Events</a> <ul class="dropdown-menu"> <li class=" d-lg-none"> <a class="dropdown-item" href="https://www.bipm.org/en/events">Page Events</a> </li> <li class=" nav-item"> <a class="dropdown-item" href="https://www.bipm.org/en/bipm-workshops" > BIPM and co-organized workshops </a> </li> <li class=" nav-item"> <a class="dropdown-item" href="https://www.bipm.org/en/events/upcoming" > Upcoming </a> </li> <li class=" nav-item"> <a class="dropdown-item" href="https://www.bipm.org/en/committees/cb/cbkt" > Knowledge transfer (CBKT) </a> </li> <li class=" nav-item"> <a class="dropdown-item" href="http://www.worldmetrologyday.org/" data-senna-off="true"> World Metrology Day </a> </li> <li class=" nav-item"> <a class="dropdown-item" href="https://www.bipm.org/en/cgpm-2022" > 27th meeting of the CGPM (2022) </a> </li> <li class=" nav-item"> <a class="dropdown-item" href="https://www.bipm.org/en/external-events" > External events </a> </li> </ul> </div> </div> </div> </li> </ul> </div> <script> AUI().use( 'liferay-navigation-interaction', 'liferay-toggler-interaction', function(A) { (function() { var $ = AUI.$;var _ = AUI._; var subMenuContainerSelector = '.dropdown-menu'; var linkSelection = '.submenu-link'; var navItemSelector = '.dropdown' function toggleParent(element){ var parent = $(element).parents(navItemSelector).first() if(parent){ if(!isOpen(parent)){ $(navItemSelector+'.show').each(function(){ hideSubmenu($(this)); }); showSubmenu(parent); }else{ hideSubmenu(parent); } }else{ console.log('no <li> found'); } } $('#navbar_com_liferay_site_navigation_menu_web_portlet_SiteNavigationMenuPortlet_INSTANCE_BipmMainMenuNavigation .navbar-collapse__subheader').on( 'tap click', function(e){ e.preventDefault(); e.stopPropagation(); toggleParent($(e.target)); } ); $('#navbar_com_liferay_site_navigation_menu_web_portlet_SiteNavigationMenuPortlet_INSTANCE_BipmMainMenuNavigation ' + linkSelection).on('tap click', function(e){ e.preventDefault(); e.stopPropagation(); toggleParent($(e.target)); }); function showSubmenu(element){ if(! element.hasClass('show')){ element.addClass('show'); } var subMenu = element.find(subMenuContainerSelector); if(subMenu) { subMenu.addClass('show'); } } function hideSubmenu(element){ if(element.hasClass('show')){ element.removeClass('show'); } var subMenu = element.find(subMenuContainerSelector); if(subMenu && subMenu.hasClass('show')) { subMenu.removeClass('show'); } } function isOpen(element){ return element.hasClass('show'); } })(); }); </script> </div> </div> </div> </section> </div> <ul class="nav-metrology-sticky main-nav__metrology-sticky metrology-areas-header" id="img-metrology-sticky"> <li class="dropdown"> <a href="#" class="nav-metrology-sticky__link"> <div class="nav-metrology-sticky__link-picto"></div> </a> <div id="second-nav-metrology-sticky" class="dropdown-menu"> <p class="nav-metrology-sticky__title">Metrology areas</p> <div class="portlet-boundary portlet-boundary_com_liferay_site_navigation_menu_web_portlet_SiteNavigationMenuPortlet_ portlet-static portlet-static-end portlet-barebone portlet-navigation " id="p_p_id_com_liferay_site_navigation_menu_web_portlet_SiteNavigationMenuPortlet_INSTANCE_navigation_metrology_"> <span id="p_com_liferay_site_navigation_menu_web_portlet_SiteNavigationMenuPortlet_INSTANCE_navigation_metrology"></span> <section class="portlet" id="portlet_com_liferay_site_navigation_menu_web_portlet_SiteNavigationMenuPortlet_INSTANCE_navigation_metrology"> <div class="portlet-content"> <div class=" portlet-content-container"> <div class="portlet-body"> <div id="navbar_com_liferay_site_navigation_menu_web_portlet_SiteNavigationMenuPortlet_INSTANCE_navigation_metrology"> <ul aria-label="Site Pages" class="nav nav-pills nav-stacked navbar-site" role="menubar"> <li class="lfr-nav-item nav-item dropdown" id="layout_com_liferay_site_navigation_menu_web_portlet_SiteNavigationMenuPortlet_INSTANCE_navigation_metrology_58839" role="presentation"> <a aria-haspopup='true' class="nav-link text-truncate dropdown-toggle" href='https://www.bipm.org/en/metrology/auv' role="menuitem"> <span class="text-truncate"> AUV: Acoustics, Ultrasound and Vibrations <span class="lfr-nav-child-toggle"><i class="icon-caret-down"></i></span></span> </a> <ul aria-expanded="false" class="child-menu dropdown-menu" role="menu"> <li class="" id="layout_com_liferay_site_navigation_menu_web_portlet_SiteNavigationMenuPortlet_INSTANCE_navigation_metrology_2437202" role="presentation"> <a class="dropdown-item" href="https://www.bipm.org/en/committees/cc/ccauv" role="menuitem">CCAUV</a> </li> <li class="" id="layout_com_liferay_site_navigation_menu_web_portlet_SiteNavigationMenuPortlet_INSTANCE_navigation_metrology_855483" role="presentation"> <a class="dropdown-item" href="http://liferay.bipm.org:8080/en/people?userId=3340064" role="menuitem">BIPM contact: Dr Gianna Panfilo</a> </li> </ul> </li> <li class="lfr-nav-item nav-item dropdown" id="layout_com_liferay_site_navigation_menu_web_portlet_SiteNavigationMenuPortlet_INSTANCE_navigation_metrology_58843" role="presentation"> <a aria-haspopup='true' class="nav-link text-truncate dropdown-toggle" href='https://www.bipm.org/en/metrology/em' role="menuitem"> <span class="text-truncate"> EM : Electricity and Magnetism <span class="lfr-nav-child-toggle"><i class="icon-caret-down"></i></span></span> </a> <ul aria-expanded="false" class="child-menu dropdown-menu" role="menu"> <li class="" id="layout_com_liferay_site_navigation_menu_web_portlet_SiteNavigationMenuPortlet_INSTANCE_navigation_metrology_909722" role="presentation"> <a class="dropdown-item" href="https://iopscience.iop.org/journal/0026-1394/page/Focus_on_Electrical_Metrology" role="menuitem">Metrologia: Focus on Metrology in Electricity and Magnetism</a> </li> <li class="" id="layout_com_liferay_site_navigation_menu_web_portlet_SiteNavigationMenuPortlet_INSTANCE_navigation_metrology_2437203" role="presentation"> <a class="dropdown-item" href="https://www.bipm.org/en/committees/cc/ccem" role="menuitem">CCEM</a> </li> <li class="" id="layout_com_liferay_site_navigation_menu_web_portlet_SiteNavigationMenuPortlet_INSTANCE_navigation_metrology_855484" role="presentation"> <a class="dropdown-item" href="http://liferay.bipm.org:8080/en/people?userId=38861" role="menuitem">BIPM contact: Dr Michael Stock</a> </li> </ul> </li> <li class="lfr-nav-item nav-item dropdown selected active" id="layout_com_liferay_site_navigation_menu_web_portlet_SiteNavigationMenuPortlet_INSTANCE_navigation_metrology_58847" role="presentation"> <a aria-haspopup='true' class="nav-link text-truncate dropdown-toggle" href='https://www.bipm.org/en/metrology/l' role="menuitem"> <span class="text-truncate"> L: Length <span class="lfr-nav-child-toggle"><i class="icon-caret-down"></i></span></span> </a> <ul aria-expanded="false" class="child-menu dropdown-menu" role="menu"> <li class="active selected" id="layout_com_liferay_site_navigation_menu_web_portlet_SiteNavigationMenuPortlet_INSTANCE_navigation_metrology_2437205" role="presentation"> <a class="dropdown-item" href="https://www.bipm.org/en/committees/cc/ccl" role="menuitem">CCL</a> </li> <li class="" id="layout_com_liferay_site_navigation_menu_web_portlet_SiteNavigationMenuPortlet_INSTANCE_navigation_metrology_855496" role="presentation"> <a class="dropdown-item" href="http://liferay.bipm.org:8080/people?userId=3340064" role="menuitem">BIPM contact: Dr Gianna Panfilo</a> </li> </ul> </li> <li class="lfr-nav-item nav-item dropdown" id="layout_com_liferay_site_navigation_menu_web_portlet_SiteNavigationMenuPortlet_INSTANCE_navigation_metrology_58851" role="presentation"> <a aria-haspopup='true' class="nav-link text-truncate dropdown-toggle" href='https://www.bipm.org/en/metrology/m' role="menuitem"> <span class="text-truncate"> M: Mass and related quantities <span class="lfr-nav-child-toggle"><i class="icon-caret-down"></i></span></span> </a> <ul aria-expanded="false" class="child-menu dropdown-menu" role="menu"> <li class="" id="layout_com_liferay_site_navigation_menu_web_portlet_SiteNavigationMenuPortlet_INSTANCE_navigation_metrology_2437206" role="presentation"> <a class="dropdown-item" href="https://www.bipm.org/en/committees/cc/ccm" role="menuitem">CCM</a> </li> <li class="" id="layout_com_liferay_site_navigation_menu_web_portlet_SiteNavigationMenuPortlet_INSTANCE_navigation_metrology_909868" role="presentation"> <a class="dropdown-item" href="https://www.bipm.orgliferay.bipm.org:8080/people?userId=663416" role="menuitem">BIPM contact: Dr Hao Fang</a> </li> </ul> </li> <li class="lfr-nav-item nav-item" id="layout_com_liferay_site_navigation_menu_web_portlet_SiteNavigationMenuPortlet_INSTANCE_navigation_metrology_58855" role="presentation"> <a class="nav-link text-truncate" href='https://www.bipm.org/en/metrology/pr' role="menuitem"> <span class="text-truncate"> PR: Photometry and Radiometry </span> </a> </li> <li class="lfr-nav-item nav-item dropdown" id="layout_com_liferay_site_navigation_menu_web_portlet_SiteNavigationMenuPortlet_INSTANCE_navigation_metrology_58859" role="presentation"> <a aria-haspopup='true' class="nav-link text-truncate dropdown-toggle" href='https://www.bipm.org/en/metrology/qm' role="menuitem"> <span class="text-truncate"> QM: Chemistry and Biology <span class="lfr-nav-child-toggle"><i class="icon-caret-down"></i></span></span> </a> <ul aria-expanded="false" class="child-menu dropdown-menu" role="menu"> <li class="" id="layout_com_liferay_site_navigation_menu_web_portlet_SiteNavigationMenuPortlet_INSTANCE_navigation_metrology_2437010" role="presentation"> <a class="dropdown-item" href="https://www.bipm.org/en/people" role="menuitem">People</a> </li> </ul> </li> <li class="lfr-nav-item nav-item" id="layout_com_liferay_site_navigation_menu_web_portlet_SiteNavigationMenuPortlet_INSTANCE_navigation_metrology_58863" role="presentation"> <a class="nav-link text-truncate" href='https://www.bipm.org/en/metrology/ri' role="menuitem"> <span class="text-truncate"> RI: Ionizing radiation </span> </a> </li> <li class="lfr-nav-item nav-item" id="layout_com_liferay_site_navigation_menu_web_portlet_SiteNavigationMenuPortlet_INSTANCE_navigation_metrology_58867" role="presentation"> <a class="nav-link text-truncate" href='https://www.bipm.org/en/metrology/t' role="menuitem"> <span class="text-truncate"> T: Thermometry </span> </a> </li> <li class="lfr-nav-item nav-item dropdown" id="layout_com_liferay_site_navigation_menu_web_portlet_SiteNavigationMenuPortlet_INSTANCE_navigation_metrology_58871" role="presentation"> <a aria-haspopup='true' class="nav-link text-truncate dropdown-toggle" href='https://www.bipm.org/en/metrology/tf' role="menuitem"> <span class="text-truncate"> TF: Time and Frequency <span class="lfr-nav-child-toggle"><i class="icon-caret-down"></i></span></span> </a> <ul aria-expanded="false" class="child-menu dropdown-menu" role="menu"> <li class="" id="layout_com_liferay_site_navigation_menu_web_portlet_SiteNavigationMenuPortlet_INSTANCE_navigation_metrology_2437208" role="presentation"> <a class="dropdown-item" href="https://www.bipm.org/en/committees/cc/cctf" role="menuitem">CCTF</a> </li> <li class="" id="layout_com_liferay_site_navigation_menu_web_portlet_SiteNavigationMenuPortlet_INSTANCE_navigation_metrology_855629" role="presentation"> <a class="dropdown-item" href="http://webtai.bipm.org/database/" role="menuitem">BIPM Time Department Database</a> </li> <li class="" id="layout_com_liferay_site_navigation_menu_web_portlet_SiteNavigationMenuPortlet_INSTANCE_navigation_metrology_855487" role="presentation"> <a class="dropdown-item" href="https://www.bipm.org/en/time-ftp" role="menuitem">Time FTP Server</a> </li> <li class="" id="layout_com_liferay_site_navigation_menu_web_portlet_SiteNavigationMenuPortlet_INSTANCE_navigation_metrology_855502" role="presentation"> <a class="dropdown-item" href="https://www.bipm.org/en/people?userId=654446" role="menuitem">BIPM contact: Dr Patrizia Tavella</a> </li> </ul> </li> <li class="lfr-nav-item nav-item dropdown" id="layout_com_liferay_site_navigation_menu_web_portlet_SiteNavigationMenuPortlet_INSTANCE_navigation_metrology_58875" role="presentation"> <a aria-haspopup='true' class="nav-link text-truncate dropdown-toggle" href='https://www.bipm.org/en/metrology/u' role="menuitem"> <span class="text-truncate"> U <span class="lfr-nav-child-toggle"><i class="icon-caret-down"></i></span></span> </a> <ul aria-expanded="false" class="child-menu dropdown-menu" role="menu"> <li class="" id="layout_com_liferay_site_navigation_menu_web_portlet_SiteNavigationMenuPortlet_INSTANCE_navigation_metrology_2437207" role="presentation"> <a class="dropdown-item" href="https://www.bipm.org/en/committees/cc/ccu" role="menuitem">CCU</a> </li> </ul> </li> </ul> </div> <script> AUI().use( 'liferay-navigation-interaction', function(A) { (function() { var $ = AUI.$;var _ = AUI._; var navigation = A.one('#navbar_com_liferay_site_navigation_menu_web_portlet_SiteNavigationMenuPortlet_INSTANCE_navigation_metrology'); Liferay.Data.NAV_INTERACTION_LIST_SELECTOR = '.navbar-site'; Liferay.Data.NAV_LIST_SELECTOR = '.navbar-site'; if (navigation) { navigation.plug(Liferay.NavigationInteraction); } })(); }); </script> </div> </div> </div> </section> </div> </div> </li> </ul> <div class="nav-search main-nav__search"> <a href="/search" class="nav-search__link"> <div class="nav-search__link-picto"></div> </a> </div> <div class="navbar-collapse__footer"> <ul class="navbar-collapse__footer-list"> <li class="navbar-collapse__footer-item metrology-areas-header"> <button data-toggle="modal" data-target="#second-nav-metrology"> <img class="navbar-collapse__footer-picto navbar-collapse__footer-picto--white" src="https://www.bipm.org/o/bipm-theme/images/picto/picto-metrology-white.svg"> <p class="navbar-collapse__footer-content">Metrology areas</p> </button> </li> <li class="navbar-collapse__footer-item quick-links-header"> <button data-toggle="modal" data-target="#second-nav-quicklinks"> <img class="navbar-collapse__footer-picto navbar-collapse__footer-picto--white" src="https://www.bipm.org/o/bipm-theme/images/picto/picto-links-white.svg" /> <p class="navbar-collapse__footer-content">Quick links</p> </button> </li> </ul> </div> </div> </nav> </div> <div class="modal fade modal-full modal-sign-in" id="second-nav-sign-in" tabindex="-1" role="dialog" aria-hidden="true"> <div class="modal-dialog modal-full__dialog modal-sign-in__dialog" role="document"> <div class="modal-content modal-full__content modal-sign-in__content"> <div class="container"> <div class="row"> <div class="col-12 col-lg-2"> <button type="button" class="close modal-full__close" data-dismiss="modal" aria-label="Close"> <img src="https://www.bipm.org/o/bipm-theme/images/picto/picto-close.svg" /> </button> </div> <div class="col-12 col-lg-10"> <div id="secondary-nav" class="header-second-nav"> <ul class="header-second-nav__list"> <li class="header-second-nav__items header-second-nav__items--connexion connexion"> <div class="sign-in-header" data-dismiss="modal" data-toggle="modal" data-target="#second-nav-sign-in"> <p class="header-second-nav__content">Sign in</p> <div class="header-second-nav__picto"></div> </div> </li> <li class="header-second-nav__items header-second-nav__items--metrology metrology-areas-header" data-dismiss="modal" data-toggle="modal" data-target="#second-nav-metrology"> <p class="header-second-nav__content">Metrology areas</p> <div class="header-second-nav__picto"></div> </li> <li class="header-second-nav__items header-second-nav__items--quicks quick-links-header" data-dismiss="modal" data-toggle="modal" data-target="#second-nav-quicklinks"> <p class="header-second-nav__content">Quick links</p> <div class="header-second-nav__picto"></div> </li> <li class="header-second-nav__items header-second-nav__items--languages languages-header"> <div class="portlet-content"> <a class="language-entry-long-text" href="/fr/committees/cc/ccl"> français </a> </div> </li> </ul> </div> </div> </div> </div> <div class="modal-body modal-sign-in__body modal-full__body"> <div class="container"> <p class="modal-full__title">Sign in</p> <div class="portlet-boundary portlet-boundary_com_liferay_login_web_portlet_LoginPortlet_ portlet-static portlet-static-end decorate portlet-login " id="p_p_id_com_liferay_login_web_portlet_LoginPortlet_"> <span id="p_com_liferay_login_web_portlet_LoginPortlet"></span> <section class="portlet" id="portlet_com_liferay_login_web_portlet_LoginPortlet"> <div class="portlet-content"> <div class="autofit-float autofit-row portlet-header"> <div class="autofit-col autofit-col-expand"> <h2 class="portlet-title-text">Sign In</h2> </div> </div> <div class=" portlet-content-container"> <div class="portlet-body"> <div class="login-container"> <form action="https://www.bipm.org/en/committees/cc/ccl?p_p_id=com_liferay_login_web_portlet_LoginPortlet&p_p_lifecycle=1&p_p_state=normal&p_p_mode=view&_com_liferay_login_web_portlet_LoginPortlet_javax.portlet.action=%2Flogin%2Flogin&_com_liferay_login_web_portlet_LoginPortlet_mvcRenderCommandName=%2Flogin%2Flogin&p_auth=FObHXGNW" class="form sign-in-form " data-fm-namespace="_com_liferay_login_web_portlet_LoginPortlet_" id="_com_liferay_login_web_portlet_LoginPortlet_loginForm" method="post" name="_com_liferay_login_web_portlet_LoginPortlet_loginForm" autocomplete="on" > <fieldset class="input-container" disabled="disabled"> <legend class="sr-only">Sign In</legend> <input class="field form-control" id="_com_liferay_login_web_portlet_LoginPortlet_formDate" name="_com_liferay_login_web_portlet_LoginPortlet_formDate" type="hidden" value="1732826007198" /> <input class="field form-control" id="_com_liferay_login_web_portlet_LoginPortlet_saveLastPath" name="_com_liferay_login_web_portlet_LoginPortlet_saveLastPath" type="hidden" value="false" /> <input class="field form-control" id="_com_liferay_login_web_portlet_LoginPortlet_redirect" name="_com_liferay_login_web_portlet_LoginPortlet_redirect" type="hidden" value="" /> <input class="field form-control" id="_com_liferay_login_web_portlet_LoginPortlet_doActionAfterLogin" name="_com_liferay_login_web_portlet_LoginPortlet_doActionAfterLogin" type="hidden" value="false" /> <div class="inline-alert-container lfr-alert-container"></div> <div class="alert alert-danger" id="_com_liferay_login_web_portlet_LoginPortlet_cookieDisabled" style="display: none;"> Authentication failed. Please enable browser cookies and try again. </div> <fieldset class="" > <legend class="sr-only"> Sign In </legend> <div class="show " id="Content" role="presentation"> <div class="panel-body"> <div class="form-group input-text-wrapper"> <label class=" control-label" for="_com_liferay_login_web_portlet_LoginPortlet_login"> Email Address </label> <input class="field clearable form-control" id="_com_liferay_login_web_portlet_LoginPortlet_login" name="_com_liferay_login_web_portlet_LoginPortlet_login" type="text" value="" /> </div> <div class="form-group input-text-wrapper"> <label class=" control-label" for="_com_liferay_login_web_portlet_LoginPortlet_password"> Password </label> <input class="field form-control" id="_com_liferay_login_web_portlet_LoginPortlet_password" name="_com_liferay_login_web_portlet_LoginPortlet_password" type="password" value="" /> </div> <span id="_com_liferay_login_web_portlet_LoginPortlet_passwordCapsLockSpan" style="display: none;">Caps Lock is on.</span> </div> </div> </fieldset> <div class="button-holder " > <button class="btn btn-primary" id="_com_liferay_login_web_portlet_LoginPortlet_lfev" type="submit" > <span class="lfr-btn-label">Sign In</span> </button> </div> </fieldset> </form> <script> AUI().use( 'liferay-form', function(A) { (function() { var $ = AUI.$;var _ = AUI._; Liferay.Form.register( { id: '_com_liferay_login_web_portlet_LoginPortlet_loginForm' , fieldRules: [ { body: '', custom: false, errorMessage: '\u0054\u0068\u0065\u0020\u0050\u0061\u0073\u0073\u0077\u006f\u0072\u0064\u0020\u0066\u0069\u0065\u006c\u0064\u0020\u0069\u0073\u0020\u0072\u0065\u0071\u0075\u0069\u0072\u0065\u0064\u002e', fieldName: '_com_liferay_login_web_portlet_LoginPortlet_password', validatorName: 'required' } , { body: '', custom: false, errorMessage: '\u0054\u0068\u0065\u0020\u004c\u006f\u0067\u0069\u006e\u0020\u0066\u0069\u0065\u006c\u0064\u0020\u0069\u0073\u0020\u0072\u0065\u0071\u0075\u0069\u0072\u0065\u0064\u002e', fieldName: '_com_liferay_login_web_portlet_LoginPortlet_login', validatorName: 'required' } , { body: '', custom: false, errorMessage: '', fieldName: '_com_liferay_login_web_portlet_LoginPortlet_login', validatorName: 'email' } ] , onSubmit: function(event) { event.preventDefault(); } , validateOnBlur: false } ); var onDestroyPortlet = function(event) { if (event.portletId === 'com_liferay_login_web_portlet_LoginPortlet') { delete Liferay.Form._INSTANCES['_com_liferay_login_web_portlet_LoginPortlet_loginForm']; } }; Liferay.on('destroyPortlet', onDestroyPortlet); A.all('#_com_liferay_login_web_portlet_LoginPortlet_loginForm .input-container').removeAttribute('disabled'); Liferay.fire( '_com_liferay_login_web_portlet_LoginPortlet_formReady', { formName: '_com_liferay_login_web_portlet_LoginPortlet_loginForm' } ); })(); }); </script> <div class="c-mt-3 navigation"> <span class="text-4" > <a href="https://www.bipm.org/en/committees/cc/ccl?p_p_id=com_liferay_login_web_portlet_LoginPortlet&p_p_lifecycle=0&p_p_state=maximized&p_p_mode=view&_com_liferay_login_web_portlet_LoginPortlet_mvcRenderCommandName=%2Flogin%2Fforgot_password&saveLastPath=false" target="_self" class=" lfr-icon-item taglib-icon" id="_com_liferay_login_web_portlet_LoginPortlet_ctvk____" > <span class="taglib-text ">Password forgotten</span> </a> </span> </div> </div> <script type="text/javascript"> (function() {var $ = AUI.$;var _ = AUI._; var form = document.getElementById('_com_liferay_login_web_portlet_LoginPortlet_loginForm'); if (form) { form.addEventListener('submit', (event) => { if (!navigator.cookieEnabled) { document.getElementById( '_com_liferay_login_web_portlet_LoginPortlet_cookieDisabled' ).style.display = ''; return; } submitForm(form); }); var password = form.querySelector('#_com_liferay_login_web_portlet_LoginPortlet_password'); if (password) { password.addEventListener('keypress', (event) => { Liferay.Util.showCapsLock( event, '_com_liferay_login_web_portlet_LoginPortlet_passwordCapsLockSpan' ); }); } } })(); </script><script> </script> </div> </div> </div> </section> </div> </div> </div> </div> </div> </div> <div class="modal fade modal-full modal-metrology" id="second-nav-metrology" tabindex="-1" role="dialog" aria-hidden="true"> <div class="modal-dialog modal-full__dialog" role="document"> <div class="modal-content modal-full__content"> <div class="container"> <div class="row"> <div class="col-12 col-lg-2"> <button type="button" class="close modal-full__close" data-dismiss="modal" aria-label="Close"> <img src="https://www.bipm.org/o/bipm-theme/images/picto/picto-close.svg" /> </button> </div> <div class="col-12 col-lg-10"> <div id="secondary-nav" class="header-second-nav"> <ul class="header-second-nav__list"> <li class="header-second-nav__items header-second-nav__items--connexion connexion"> <div class="sign-in-header" data-dismiss="modal" data-toggle="modal" data-target="#second-nav-sign-in"> <p class="header-second-nav__content">Sign in</p> <div class="header-second-nav__picto"></div> </div> </li> <li class="header-second-nav__items header-second-nav__items--metrology metrology-areas-header" data-dismiss="modal" data-toggle="modal" data-target="#second-nav-metrology"> <p class="header-second-nav__content">Metrology areas</p> <div class="header-second-nav__picto"></div> </li> <li class="header-second-nav__items header-second-nav__items--quicks quick-links-header" data-dismiss="modal" data-toggle="modal" data-target="#second-nav-quicklinks"> <p class="header-second-nav__content">Quick links</p> <div class="header-second-nav__picto"></div> </li> <li class="header-second-nav__items header-second-nav__items--languages languages-header"> <div class="portlet-content"> <a class="language-entry-long-text" href="/fr/committees/cc/ccl"> français </a> </div> </li> </ul> </div> </div> </div> </div> <div class="modal-body modal-full__body modal-metrology__body"> <div class="container"> <p class="modal-full__title">Metrology areas</p> <div class="portlet-boundary portlet-boundary_com_liferay_site_navigation_menu_web_portlet_SiteNavigationMenuPortlet_ portlet-static portlet-static-end portlet-barebone portlet-navigation " id="p_p_id_com_liferay_site_navigation_menu_web_portlet_SiteNavigationMenuPortlet_INSTANCE_navigation_metrology_"> <span id="p_com_liferay_site_navigation_menu_web_portlet_SiteNavigationMenuPortlet_INSTANCE_navigation_metrology"></span> <section class="portlet" id="portlet_com_liferay_site_navigation_menu_web_portlet_SiteNavigationMenuPortlet_INSTANCE_navigation_metrology"> <div class="portlet-content"> <div class=" portlet-content-container"> <div class="portlet-body"> <div id="navbar_com_liferay_site_navigation_menu_web_portlet_SiteNavigationMenuPortlet_INSTANCE_navigation_metrology"> <ul aria-label="Site Pages" class="nav nav-pills nav-stacked navbar-site" role="menubar"> <li class="lfr-nav-item nav-item dropdown" id="layout_com_liferay_site_navigation_menu_web_portlet_SiteNavigationMenuPortlet_INSTANCE_navigation_metrology_58839" role="presentation"> <a aria-haspopup='true' class="nav-link text-truncate dropdown-toggle" href='https://www.bipm.org/en/metrology/auv' role="menuitem"> <span class="text-truncate"> AUV: Acoustics, Ultrasound and Vibrations <span class="lfr-nav-child-toggle"><i class="icon-caret-down"></i></span></span> </a> <ul aria-expanded="false" class="child-menu dropdown-menu" role="menu"> <li class="" id="layout_com_liferay_site_navigation_menu_web_portlet_SiteNavigationMenuPortlet_INSTANCE_navigation_metrology_2437202" role="presentation"> <a class="dropdown-item" href="https://www.bipm.org/en/committees/cc/ccauv" role="menuitem">CCAUV</a> </li> <li class="" id="layout_com_liferay_site_navigation_menu_web_portlet_SiteNavigationMenuPortlet_INSTANCE_navigation_metrology_855483" role="presentation"> <a class="dropdown-item" href="http://liferay.bipm.org:8080/en/people?userId=3340064" role="menuitem">BIPM contact: Dr Gianna Panfilo</a> </li> </ul> </li> <li class="lfr-nav-item nav-item dropdown" id="layout_com_liferay_site_navigation_menu_web_portlet_SiteNavigationMenuPortlet_INSTANCE_navigation_metrology_58843" role="presentation"> <a aria-haspopup='true' class="nav-link text-truncate dropdown-toggle" href='https://www.bipm.org/en/metrology/em' role="menuitem"> <span class="text-truncate"> EM : Electricity and Magnetism <span class="lfr-nav-child-toggle"><i class="icon-caret-down"></i></span></span> </a> <ul aria-expanded="false" class="child-menu dropdown-menu" role="menu"> <li class="" id="layout_com_liferay_site_navigation_menu_web_portlet_SiteNavigationMenuPortlet_INSTANCE_navigation_metrology_909722" role="presentation"> <a class="dropdown-item" href="https://iopscience.iop.org/journal/0026-1394/page/Focus_on_Electrical_Metrology" role="menuitem">Metrologia: Focus on Metrology in Electricity and Magnetism</a> </li> <li class="" id="layout_com_liferay_site_navigation_menu_web_portlet_SiteNavigationMenuPortlet_INSTANCE_navigation_metrology_2437203" role="presentation"> <a class="dropdown-item" href="https://www.bipm.org/en/committees/cc/ccem" role="menuitem">CCEM</a> </li> <li class="" id="layout_com_liferay_site_navigation_menu_web_portlet_SiteNavigationMenuPortlet_INSTANCE_navigation_metrology_855484" role="presentation"> <a class="dropdown-item" href="http://liferay.bipm.org:8080/en/people?userId=38861" role="menuitem">BIPM contact: Dr Michael Stock</a> </li> </ul> </li> <li class="lfr-nav-item nav-item dropdown selected active" id="layout_com_liferay_site_navigation_menu_web_portlet_SiteNavigationMenuPortlet_INSTANCE_navigation_metrology_58847" role="presentation"> <a aria-haspopup='true' class="nav-link text-truncate dropdown-toggle" href='https://www.bipm.org/en/metrology/l' role="menuitem"> <span class="text-truncate"> L: Length <span class="lfr-nav-child-toggle"><i class="icon-caret-down"></i></span></span> </a> <ul aria-expanded="false" class="child-menu dropdown-menu" role="menu"> <li class="active selected" id="layout_com_liferay_site_navigation_menu_web_portlet_SiteNavigationMenuPortlet_INSTANCE_navigation_metrology_2437205" role="presentation"> <a class="dropdown-item" href="https://www.bipm.org/en/committees/cc/ccl" role="menuitem">CCL</a> </li> <li class="" id="layout_com_liferay_site_navigation_menu_web_portlet_SiteNavigationMenuPortlet_INSTANCE_navigation_metrology_855496" role="presentation"> <a class="dropdown-item" href="http://liferay.bipm.org:8080/people?userId=3340064" role="menuitem">BIPM contact: Dr Gianna Panfilo</a> </li> </ul> </li> <li class="lfr-nav-item nav-item dropdown" id="layout_com_liferay_site_navigation_menu_web_portlet_SiteNavigationMenuPortlet_INSTANCE_navigation_metrology_58851" role="presentation"> <a aria-haspopup='true' class="nav-link text-truncate dropdown-toggle" href='https://www.bipm.org/en/metrology/m' role="menuitem"> <span class="text-truncate"> M: Mass and related quantities <span class="lfr-nav-child-toggle"><i class="icon-caret-down"></i></span></span> </a> <ul aria-expanded="false" class="child-menu dropdown-menu" role="menu"> <li class="" id="layout_com_liferay_site_navigation_menu_web_portlet_SiteNavigationMenuPortlet_INSTANCE_navigation_metrology_2437206" role="presentation"> <a class="dropdown-item" href="https://www.bipm.org/en/committees/cc/ccm" role="menuitem">CCM</a> </li> <li class="" id="layout_com_liferay_site_navigation_menu_web_portlet_SiteNavigationMenuPortlet_INSTANCE_navigation_metrology_909868" role="presentation"> <a class="dropdown-item" href="https://www.bipm.orgliferay.bipm.org:8080/people?userId=663416" role="menuitem">BIPM contact: Dr Hao Fang</a> </li> </ul> </li> <li class="lfr-nav-item nav-item" id="layout_com_liferay_site_navigation_menu_web_portlet_SiteNavigationMenuPortlet_INSTANCE_navigation_metrology_58855" role="presentation"> <a class="nav-link text-truncate" href='https://www.bipm.org/en/metrology/pr' role="menuitem"> <span class="text-truncate"> PR: Photometry and Radiometry </span> </a> </li> <li class="lfr-nav-item nav-item dropdown" id="layout_com_liferay_site_navigation_menu_web_portlet_SiteNavigationMenuPortlet_INSTANCE_navigation_metrology_58859" role="presentation"> <a aria-haspopup='true' class="nav-link text-truncate dropdown-toggle" href='https://www.bipm.org/en/metrology/qm' role="menuitem"> <span class="text-truncate"> QM: Chemistry and Biology <span class="lfr-nav-child-toggle"><i class="icon-caret-down"></i></span></span> </a> <ul aria-expanded="false" class="child-menu dropdown-menu" role="menu"> <li class="" id="layout_com_liferay_site_navigation_menu_web_portlet_SiteNavigationMenuPortlet_INSTANCE_navigation_metrology_2437010" role="presentation"> <a class="dropdown-item" href="https://www.bipm.org/en/people" role="menuitem">People</a> </li> </ul> </li> <li class="lfr-nav-item nav-item" id="layout_com_liferay_site_navigation_menu_web_portlet_SiteNavigationMenuPortlet_INSTANCE_navigation_metrology_58863" role="presentation"> <a class="nav-link text-truncate" href='https://www.bipm.org/en/metrology/ri' role="menuitem"> <span class="text-truncate"> RI: Ionizing radiation </span> </a> </li> <li class="lfr-nav-item nav-item" id="layout_com_liferay_site_navigation_menu_web_portlet_SiteNavigationMenuPortlet_INSTANCE_navigation_metrology_58867" role="presentation"> <a class="nav-link text-truncate" href='https://www.bipm.org/en/metrology/t' role="menuitem"> <span class="text-truncate"> T: Thermometry </span> </a> </li> <li class="lfr-nav-item nav-item dropdown" id="layout_com_liferay_site_navigation_menu_web_portlet_SiteNavigationMenuPortlet_INSTANCE_navigation_metrology_58871" role="presentation"> <a aria-haspopup='true' class="nav-link text-truncate dropdown-toggle" href='https://www.bipm.org/en/metrology/tf' role="menuitem"> <span class="text-truncate"> TF: Time and Frequency <span class="lfr-nav-child-toggle"><i class="icon-caret-down"></i></span></span> </a> <ul aria-expanded="false" class="child-menu dropdown-menu" role="menu"> <li class="" id="layout_com_liferay_site_navigation_menu_web_portlet_SiteNavigationMenuPortlet_INSTANCE_navigation_metrology_2437208" role="presentation"> <a class="dropdown-item" href="https://www.bipm.org/en/committees/cc/cctf" role="menuitem">CCTF</a> </li> <li class="" id="layout_com_liferay_site_navigation_menu_web_portlet_SiteNavigationMenuPortlet_INSTANCE_navigation_metrology_855629" role="presentation"> <a class="dropdown-item" href="http://webtai.bipm.org/database/" role="menuitem">BIPM Time Department Database</a> </li> <li class="" id="layout_com_liferay_site_navigation_menu_web_portlet_SiteNavigationMenuPortlet_INSTANCE_navigation_metrology_855487" role="presentation"> <a class="dropdown-item" href="https://www.bipm.org/en/time-ftp" role="menuitem">Time FTP Server</a> </li> <li class="" id="layout_com_liferay_site_navigation_menu_web_portlet_SiteNavigationMenuPortlet_INSTANCE_navigation_metrology_855502" role="presentation"> <a class="dropdown-item" href="https://www.bipm.org/en/people?userId=654446" role="menuitem">BIPM contact: Dr Patrizia Tavella</a> </li> </ul> </li> <li class="lfr-nav-item nav-item dropdown" id="layout_com_liferay_site_navigation_menu_web_portlet_SiteNavigationMenuPortlet_INSTANCE_navigation_metrology_58875" role="presentation"> <a aria-haspopup='true' class="nav-link text-truncate dropdown-toggle" href='https://www.bipm.org/en/metrology/u' role="menuitem"> <span class="text-truncate"> U <span class="lfr-nav-child-toggle"><i class="icon-caret-down"></i></span></span> </a> <ul aria-expanded="false" class="child-menu dropdown-menu" role="menu"> <li class="" id="layout_com_liferay_site_navigation_menu_web_portlet_SiteNavigationMenuPortlet_INSTANCE_navigation_metrology_2437207" role="presentation"> <a class="dropdown-item" href="https://www.bipm.org/en/committees/cc/ccu" role="menuitem">CCU</a> </li> </ul> </li> </ul> </div> <script> AUI().use( 'liferay-navigation-interaction', function(A) { (function() { var $ = AUI.$;var _ = AUI._; var navigation = A.one('#navbar_com_liferay_site_navigation_menu_web_portlet_SiteNavigationMenuPortlet_INSTANCE_navigation_metrology'); Liferay.Data.NAV_INTERACTION_LIST_SELECTOR = '.navbar-site'; Liferay.Data.NAV_LIST_SELECTOR = '.navbar-site'; if (navigation) { navigation.plug(Liferay.NavigationInteraction); } })(); }); </script> </div> </div> </div> </section> </div> </div> </div> </div> </div> </div> <div class="modal fade modal-full modal-quicklinks" id="second-nav-quicklinks" tabindex="-1" role="dialog" aria-hidden="true"> <div class="modal-dialog modal-full__dialog" role="document"> <div class="modal-content modal-full__content"> <div class="container"> <div class="row"> <div class="col-12 col-lg-2"> <button type="button" class="close modal-full__close" data-dismiss="modal" aria-label="Close"> <img src="https://www.bipm.org/o/bipm-theme/images/picto/picto-close.svg" /> </button> </div> <div class="col-12 col-lg-10"> <div id="secondary-nav" class="header-second-nav"> <ul class="header-second-nav__list"> <li class="header-second-nav__items header-second-nav__items--connexion connexion"> <div class="sign-in-header" data-dismiss="modal" data-toggle="modal" data-target="#second-nav-sign-in"> <p class="header-second-nav__content">Sign in</p> <div class="header-second-nav__picto"></div> </div> </li> <li class="header-second-nav__items header-second-nav__items--metrology metrology-areas-header" data-dismiss="modal" data-toggle="modal" data-target="#second-nav-metrology"> <p class="header-second-nav__content">Metrology areas</p> <div class="header-second-nav__picto"></div> </li> <li class="header-second-nav__items header-second-nav__items--quicks quick-links-header" data-dismiss="modal" data-toggle="modal" data-target="#second-nav-quicklinks"> <p class="header-second-nav__content">Quick links</p> <div class="header-second-nav__picto"></div> </li> <li class="header-second-nav__items header-second-nav__items--languages languages-header"> <div class="portlet-content"> <a class="language-entry-long-text" href="/fr/committees/cc/ccl"> français </a> </div> </li> </ul> </div> </div> </div> </div> <div class="modal-body modal-full__body"> <div class="container"> <p class="modal-full__title">Quick links</p> <div class="portlet-boundary portlet-boundary_com_liferay_site_navigation_menu_web_portlet_SiteNavigationMenuPortlet_ portlet-static portlet-static-end portlet-barebone portlet-navigation " id="p_p_id_com_liferay_site_navigation_menu_web_portlet_SiteNavigationMenuPortlet_INSTANCE_navigation_quicklinks_"> <span id="p_com_liferay_site_navigation_menu_web_portlet_SiteNavigationMenuPortlet_INSTANCE_navigation_quicklinks"></span> <section class="portlet" id="portlet_com_liferay_site_navigation_menu_web_portlet_SiteNavigationMenuPortlet_INSTANCE_navigation_quicklinks"> <div class="portlet-content"> <div class=" portlet-content-container"> <div class="portlet-body"> <div id="navbar_com_liferay_site_navigation_menu_web_portlet_SiteNavigationMenuPortlet_INSTANCE_navigation_quicklinks"> <ul aria-label="Site Pages" class="nav nav-pills nav-stacked navbar-site" role="menubar"> <li class="lfr-nav-item nav-item dropdown" id="layout_3033748" role="presentation"> <a aria-labelledby="layout_3033748" aria-haspopup='true' class="nav-link text-truncate dropdown-toggle" role="menuitem"> <span class="text-truncate"> The 2018 revision of the SI <span class="lfr-nav-child-toggle"><i class="icon-caret-down"></i></span></span> </a> <ul aria-expanded="false" class="child-menu dropdown-menu" role="menu"> <li class="" id="layout_3033749" role="presentation"> <a aria-labelledby="layout_3033749" class="dropdown-item" href="https://www.youtube.com/watch?v=V7myhT_CwYc&list=PL-vj-3_a7wTDeKEupZSX7Tw42yReNgJLl&index=8&t=0s" role="menuitem">Celebrating the vote by the CGPM</a> </li> <li class="" id="layout_840479" role="presentation"> <a aria-labelledby="layout_840479" class="dropdown-item" href="https://www.bipm.org/en/cgpm-2018/" role="menuitem">26th CGPM (November 2018)</a> </li> <li class="" id="layout_3033736" role="presentation"> <a aria-labelledby="layout_3033736" class="dropdown-item" href="https://physics.nist.gov/cuu/Constants/index.html" role="menuitem">2018 values of the Fundamental Physical Constants</a> </li> <li class="" id="layout_3033751" role="presentation"> <a aria-labelledby="layout_3033751" class="dropdown-item" href="https://www.bipm.org/en/CGPM/db/26/1/" role="menuitem">Resolution 1 of the 26th CGPM (2018)</a> </li> <li class="" id="layout_924415" role="presentation"> <a aria-labelledby="layout_924415" class="dropdown-item" href="https://www.bipm.org/en/publications/si-brochure/" role="menuitem">SI Brochure (2019)</a> </li> </ul> </li> <li class="lfr-nav-item nav-item" id="layout_3401007" role="presentation"> <a aria-labelledby="layout_3401007" class="nav-link text-truncate" href='http://www.worldmetrologyday.org/' role="menuitem"> <span class="text-truncate"> World Metrology Day </span> </a> </li> <li class="lfr-nav-item nav-item" id="layout_3033738" role="presentation"> <a aria-labelledby="layout_3033738" class="nav-link text-truncate" href='https://jcgm.bipm.org/vim/en/index.html' role="menuitem"> <span class="text-truncate"> International Vocabulary of Metrology (VIM) </span> </a> </li> <li class="lfr-nav-item nav-item" id="layout_414019" role="presentation"> <a aria-labelledby="layout_414019" class="nav-link text-truncate" href='https://iopscience.iop.org/journal/0026-1394' role="menuitem"> <span class="text-truncate"> Metrologia </span> </a> </li> <li class="lfr-nav-item nav-item" id="layout_3033739" role="presentation"> <a aria-labelledby="layout_3033739" class="nav-link text-truncate" href='https://www.bipm.org/en/publications/guides/#gum' role="menuitem"> <span class="text-truncate"> Guide to the Expression of Uncertainty in Measurement </span> </a> </li> <li class="lfr-nav-item nav-item dropdown" id="layout_418284" role="presentation"> <a aria-labelledby="layout_418284" aria-haspopup='true' class="nav-link text-truncate dropdown-toggle" role="menuitem"> <span class="text-truncate"> Autres publications <span class="lfr-nav-child-toggle"><i class="icon-caret-down"></i></span></span> </a> <ul aria-expanded="false" class="child-menu dropdown-menu" role="menu"> <li class="" id="layout_3033741" role="presentation"> <a aria-labelledby="layout_3033741" class="dropdown-item" href="https://www.bipm.org/en/worldwide-metrology/cgpm/resolutions.html" role="menuitem">Resolutions of the CGPM</a> </li> <li class="" id="layout_924416" role="presentation"> <a aria-labelledby="layout_924416" class="dropdown-item" href="https://www.bipm.org/en/time-ftp" role="menuitem">Time FTP Server</a> </li> </ul> </li> <li class="lfr-nav-item nav-item" id="layout_3033737" role="presentation"> <a aria-labelledby="layout_3033737" class="nav-link text-truncate" href='https://www.bipm.org/en/cbkt/' role="menuitem"> <span class="text-truncate"> Capacity Broadening & Knowledge Transfer (CBKT) </span> </a> </li> <li class="lfr-nav-item nav-item dropdown" id="layout_3033740" role="presentation"> <a aria-labelledby="layout_3033740" aria-haspopup='true' class="nav-link text-truncate dropdown-toggle" role="menuitem"> <span class="text-truncate"> NMI Directors and Member State Representatives <span class="lfr-nav-child-toggle"><i class="icon-caret-down"></i></span></span> </a> <ul aria-expanded="false" class="child-menu dropdown-menu" role="menu"> <li class="" id="layout_924417" role="presentation"> <a aria-labelledby="layout_924417" class="dropdown-item" href="https://www.bipm.org/en/about-us/" role="menuitem">BIPM strategy document</a> </li> <li class="" id="layout_3033742" role="presentation"> <a aria-labelledby="layout_3033742" class="dropdown-item" href="https://www.bipm.org/en/about-us/member-states/" role="menuitem">Toolbox: Benefits and how to participate</a> </li> </ul> </li> <li class="lfr-nav-item nav-item" id="layout_3033743" role="presentation"> <a aria-labelledby="layout_3033743" class="nav-link text-truncate" href='https://www.bipm.org/en/committees/jc/jcrb' role="menuitem"> <span class="text-truncate"> JCRB </span> </a> </li> <li class="lfr-nav-item nav-item dropdown" id="layout_3117765" role="presentation"> <a aria-labelledby="layout_3117765" aria-haspopup='true' class="nav-link text-truncate dropdown-toggle" role="menuitem"> <span class="text-truncate"> tests <span class="lfr-nav-child-toggle"><i class="icon-caret-down"></i></span></span> </a> <ul aria-expanded="false" class="child-menu dropdown-menu" role="menu"> <li class="" id="layout_3117766" role="presentation"> <a aria-labelledby="layout_3117766" class="dropdown-item" href="https://www.bipm.org/fr/about-us/" role="menuitem">Test URL</a> </li> </ul> </li> <li class="lfr-nav-item nav-item" id="layout_3033744" role="presentation"> <a aria-labelledby="layout_3033744" class="nav-link text-truncate" href='http://kcdb2.bipm.org:8080/kcdb/' role="menuitem"> <span class="text-truncate"> KCDB </span> </a> </li> </ul> </div> <script> AUI().use( 'liferay-navigation-interaction', function(A) { (function() { var $ = AUI.$;var _ = AUI._; var navigation = A.one('#navbar_com_liferay_site_navigation_menu_web_portlet_SiteNavigationMenuPortlet_INSTANCE_navigation_quicklinks'); Liferay.Data.NAV_INTERACTION_LIST_SELECTOR = '.navbar-site'; Liferay.Data.NAV_LIST_SELECTOR = '.navbar-site'; if (navigation) { navigation.plug(Liferay.NavigationInteraction); } })(); }); </script> </div> </div> </div> </section> </div> </div> </div> </div> </div> </div> </div> </header> <main id="content"> <div class="container"> <p class="hide-accessible sr-only">CCL</p> <style type="text/css"> .master-layout-fragment .portlet-header { display: none; } </style> <div class="columns-1" id="main-content" role="main"> <div class="portlet-layout row"> <div class="col-md-12 portlet-column portlet-column-only" id="column-1"> <div class="portlet-dropzone portlet-column-content portlet-column-content-only" id="layout-column_column-1"> <div class="portlet-boundary portlet-boundary_committee_members_portlet_ portlet-static portlet-static-end bipm-lame-white " id="p_p_id_committee_members_portlet_"> <span id="p_committee_members_portlet"></span> <section class="portlet" id="portlet_committee_members_portlet"> <div class="portlet-content"> <div class="autofit-float autofit-row portlet-header"> <div class="autofit-col autofit-col-expand"> <h2 class="portlet-title-text">Committee members</h2> </div> </div> <div class=" portlet-content-container"> <div class="portlet-body"> <div class="list-members"> <h1 class="title-primary list-members__title">Consultative Committee for Length (CCL)</h1>  <div class="row"> <div class="col-12 col-lg-6"> <div class="list-members__content"> <h2 class="title-secondary title-secondary--small list-members__subtitle">President</h2> <div class="list-members-list list-members-list--single"> <div class="list-members-list__item"> <p class="list-members-list__title"><a href="/people?userId=3308190"> Dr V. Coleman </a></p> <div class="list-members-list__content"> <p>Section Manager, Nanometrology</p> <p></p> <p>National Measurement Institute, Australia</p> <p>Australia</p> </div> </div> </div> </div> </div> <div class="col-12 col-lg-6"> <div class="list-members__content"> <h2 class="title-secondary title-secondary--small list-members__subtitle">Executive Secretary</h2> <div class="list-members-list list-members-list--single"> <div class="list-members-list__item"> <p class="list-members-list__title"><a href="/people?userId=3340064"> Dr G. Panfilo </a></p> <div class="list-members-list__content"> <p></p> <p></p> <p>Bureau international des poids et mesures</p> <p>France</p> </div> </div> </div> </div> </div> </div> <div class="list-members__footer"> <a class="button-primary" href="/committees/cc/ccl/members" role="button"> ALL MEMBERS </a> </div> </div> </div> </div> </div> </section> </div> <div class="portlet-boundary portlet-boundary_meetings_portlet_ portlet-static portlet-static-end bipm-lame-grey " id="p_p_id_meetings_portlet_"> <span id="p_meetings_portlet"></span> <section class="portlet" id="portlet_meetings_portlet"> <div class="portlet-content"> <div class="autofit-float autofit-row portlet-header"> <div class="autofit-col autofit-col-expand"> <h2 class="portlet-title-text">List of meetings</h2> </div> </div> <div class=" portlet-content-container"> <div class="portlet-body"> <div class="meetings-list-portlet"> <p class="title-secondary meetings-list-portlet__title"> Meetings and related documents </p> <div> </div> <div class="meetings-list"> <div class="meetings-list__item"> <div class="meetings-list__content meetings-list__content--session meetings-list__content--committee"> <div class="meetings-list__header"> <p class="meetings-list__title"> <span class="meetings-list__title-calendar"></span> Past Meeting </p> </div> <div class="meetings-list__informations"> <a href="/committees/cc/ccl/19-2024" class="meetings-list__informations-title"> 19th meeting of the CCL </a> <ul class="meetings-list__informations-date"> <li class="meetings-list__informations-date-date"> From 10 to 11 </li> <li class="meetings-list__informations-date-month">October</li> <li class="meetings-list__informations-date-year">2024</li> </ul> </div> <ul class="meetings-list__list"> <li> <a href="/people?userId=3340064" class="meetings-list__list-link"> <span class="meetings-list__list-link-user"></span> <span></span>Gianna Panfilo</span> </a> </li> <li> <a href="/committees/cc/ccl" class="meetings-list__list-link"> <span class="meetings-list__list-link-session"></span> <span></span>CCL</span> </a> </li> </ul> </div> </div> <div class="meetings-list__item"> <div class="meetings-list__content meetings-list__content--session meetings-list__content--working-group"> <div class="meetings-list__header"> <p class="meetings-list__title"> <span class="meetings-list__title-calendar"></span> Past Meeting </p> </div> <div class="meetings-list__informations"> <a href="/committees/cc/ccl/wg/ccl-wg-s/2024-10-09-1" class="meetings-list__informations-title"> CCL-WG-S </a> <ul class="meetings-list__informations-date"> <li class="meetings-list__informations-date-date"> 09 </li> <li class="meetings-list__informations-date-month">October</li> <li class="meetings-list__informations-date-year">2024</li> </ul> </div> <ul class="meetings-list__list"> <li> <a href="/people?userId=3340064" class="meetings-list__list-link"> <span class="meetings-list__list-link-user"></span> <span></span>Gianna Panfilo</span> </a> </li> <li> <a href="/committees/cc/ccl/wg/ccl-wg-s" class="meetings-list__list-link"> <span class="meetings-list__list-link-session"></span> <span></span>CCL-WG-S</span> </a> </li> </ul> </div> </div> <div class="meetings-list__item"> <div class="meetings-list__content meetings-list__content--workshop meetings-list__content--working-group"> <div class="meetings-list__header"> <p class="meetings-list__title"> <span class="meetings-list__title-calendar"></span> Workshop </p> </div> <div class="meetings-list__informations"> <a href="/committees/cc/ccl/wg/ccl-ws/2024-10-09" class="meetings-list__informations-title"> CCL Workshop on "Latest developments in the field of Length” </a> <ul class="meetings-list__informations-date"> <li class="meetings-list__informations-date-date"> 09 </li> <li class="meetings-list__informations-date-month">October</li> <li class="meetings-list__informations-date-year">2024</li> </ul> </div> <ul class="meetings-list__list"> <li> <a href="/people?userId=3340064" class="meetings-list__list-link"> <span class="meetings-list__list-link-user"></span> <span></span>Gianna Panfilo</span> </a> </li> <li> <a href="/committees/cc/ccl/wg/ccl-ws" class="meetings-list__list-link"> <span class="meetings-list__list-link-session"></span> <span></span>CCL-WS</span> </a> </li> </ul> </div> </div> <div class="meetings-list__item"> <div class="meetings-list__content meetings-list__content--session meetings-list__content--working-group"> <div class="meetings-list__header"> <p class="meetings-list__title"> <span class="meetings-list__title-calendar"></span> Past Meeting </p> </div> <div class="meetings-list__informations"> <a href="/committees/cc/ccl/wg/ccl-wg-n/2024-10-08" class="meetings-list__informations-title"> CCL-WG-N </a> <ul class="meetings-list__informations-date"> <li class="meetings-list__informations-date-date"> 08 </li> <li class="meetings-list__informations-date-month">October</li> <li class="meetings-list__informations-date-year">2024</li> </ul> </div> <ul class="meetings-list__list"> <li> <span class="meetings-list__list-link-user"></span> <span> </span> </li> <li> <a href="/committees/cc/ccl/wg/ccl-wg-n" class="meetings-list__list-link"> <span class="meetings-list__list-link-session"></span> <span></span>CCL-WG-N</span> </a> </li> </ul> </div> </div> </div> <div class="list-members__footer"> <a class="button-primary" href="/committees/cc/ccl/meetings" role="button"> All meetings </a> </div> </div> </div> </div> </div> </section> </div> <div class="portlet-boundary portlet-boundary_com_liferay_asset_publisher_web_portlet_AssetPublisherPortlet_ portlet-static portlet-static-end bipm-lame-white portlet-asset-publisher " id="p_p_id_com_liferay_asset_publisher_web_portlet_AssetPublisherPortlet_INSTANCE_dFyK3vffnxwl_"> <span id="p_com_liferay_asset_publisher_web_portlet_AssetPublisherPortlet_INSTANCE_dFyK3vffnxwl"></span> <section class="portlet" id="portlet_com_liferay_asset_publisher_web_portlet_AssetPublisherPortlet_INSTANCE_dFyK3vffnxwl"> <div class="portlet-content"> <div class="autofit-float autofit-row portlet-header"> <div class="autofit-col autofit-col-expand"> <h2 class="portlet-title-text">Asset Publisher</h2> </div> </div> <div class=" portlet-content-container"> <div class="portlet-body"> <div class="working-group"> <div class="working-group__header"> <p class="title-secondary">Working Groups</p> </div> <div class="working-group__wrapper"> <div class="working-group-list"> <div class="working-group-list__item"> <a href="https://www.bipm.org/web/guest/committees/cc/ccl/wg/ccl-tg-dig" class="working-group-list__link"> <div> <div class="working-group-list__picto"></div> </div> <div> <p class="working-group-list__id">CCL-TG-DIG</p> <p class="working-group-list__title">CCL Task Group on Digitalization</p> </div> </a> </div> <div class="working-group-list__item"> <a href="https://www.bipm.org/web/guest/committees/cc/ccl/wg/ccl-wg-cm" class="working-group-list__link"> <div> <div class="working-group-list__picto"></div> </div> <div> <p class="working-group-list__id">CCL-WG-CM</p> <p class="working-group-list__title">CCL Working Group on Coordinate Metrology</p> </div> </a> </div> <div class="working-group-list__item"> <a href="https://www.bipm.org/web/guest/committees/cc/ccl/wg/ccl-wg-mra" class="working-group-list__link"> <div> <div class="working-group-list__picto"></div> </div> <div> <p class="working-group-list__id">CCL-WG-MRA</p> <p class="working-group-list__title">CCL Working Group on the CIPM MRA</p> </div> </a> </div> <div class="working-group-list__item"> <a href="https://www.bipm.org/web/guest/committees/cc/ccl/wg/ccl-wg-n" class="working-group-list__link"> <div> <div class="working-group-list__picto"></div> </div> <div> <p class="working-group-list__id">CCL-WG-N</p> <p class="working-group-list__title">CCL Working Group on Dimensional Nanometrology</p> </div> </a> </div> <div class="working-group-list__item"> <a href="https://www.bipm.org/web/guest/committees/cc/ccl/wg/ccl-wg-s" class="working-group-list__link"> <div> <div class="working-group-list__picto"></div> </div> <div> <p class="working-group-list__id">CCL-WG-S</p> <p class="working-group-list__title">CCL Working Group on Strategic Planning</p> </div> </a> </div> </div> </div> </div> </div> </div> </div> </section> </div> <div class="portlet-boundary portlet-boundary_com_liferay_journal_content_web_portlet_JournalContentPortlet_ portlet-static portlet-static-end portlet-barebone portlet-journal-content " id="p_p_id_com_liferay_journal_content_web_portlet_JournalContentPortlet_INSTANCE_bIP4JtoDG80Z_"> <span id="p_com_liferay_journal_content_web_portlet_JournalContentPortlet_INSTANCE_bIP4JtoDG80Z"></span> <section class="portlet" id="portlet_com_liferay_journal_content_web_portlet_JournalContentPortlet_INSTANCE_bIP4JtoDG80Z"> <div class="portlet-content"> <div class="autofit-float autofit-row portlet-header"> <div class="autofit-col autofit-col-end"> <div class="autofit-section"> <div class="visible-interaction"> </div> </div> </div> </div> <div class=" portlet-content-container"> <div class="portlet-body"> <div class="" data-fragments-editor-item-id="46722-4766609" data-fragments-editor-item-type="fragments-editor-mapped-item" > <div class="journal-content-article " data-analytics-asset-id="4766607" data-analytics-asset-title="see also CCL-CCTF-WGFS" data-analytics-asset-type="web-content"> <div class="working-group"> <div class="working-group__wrapper"> <div class="working-group-list"> <div class="working-group-list__item"> <div class="working-group-list__link"> <div> <div class="working-group-list__picto"> </div> </div> <div><a class="working-group-list__id" href="/committees/cc/cctf/wg/ccl-cctf-wgfs">CCL-CCTF-WGFS</a> <a class="working-group-list__title" href="/committees/cc/cctf/wg/ccl-cctf-wgfs">CCL-CCTF Frequency Standards Working Group</a></div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </section> </div> <div class="portlet-boundary portlet-boundary_com_liferay_journal_content_web_portlet_JournalContentPortlet_ portlet-static portlet-static-end decorate portlet-journal-content " id="p_p_id_com_liferay_journal_content_web_portlet_JournalContentPortlet_INSTANCE_DsJxKZabodD8_"> <span id="p_com_liferay_journal_content_web_portlet_JournalContentPortlet_INSTANCE_DsJxKZabodD8"></span> <section class="portlet" id="portlet_com_liferay_journal_content_web_portlet_JournalContentPortlet_INSTANCE_DsJxKZabodD8"> <div class="portlet-content"> <div class="autofit-float autofit-row portlet-header"> <div class="autofit-col autofit-col-expand"> <h2 class="portlet-title-text">CCL DGs</h2> </div> <div class="autofit-col autofit-col-end"> <div class="autofit-section"> <div class="visible-interaction"> </div> </div> </div> </div> <div class=" portlet-content-container"> <div class="portlet-body"> <div class="" data-fragments-editor-item-id="46722-264932506" data-fragments-editor-item-type="fragments-editor-mapped-item" > <div class="journal-content-article " data-analytics-asset-id="264932504" data-analytics-asset-title="CCL DGs" data-analytics-asset-type="web-content"> <h2>Discussion Groups</h2> <div class="working-group"> <div class="working-group__wrapper"> <div class="working-group-list"> <div class="working-group-list__item"> <div class="working-group-list__link"> <div> <div class="working-group-list__picto"> </div> </div> <div><a class="working-group-list__id" href="/committees/cc/ccl/wg/ccl-dg1">CCL-DG1</a> <a class="working-group-list__title" href="/committees/cc/ccl/wg/ccl-dg1">CCL Discussion Group on Gauge Blocks</a></div> </div> </div> <div class="working-group-list__item"> <div class="working-group-list__link"> <div> <div class="working-group-list__picto"> </div> </div> <div><a class="working-group-list__id" href="/committees/cc/ccl/wg/ccl-dg2">CCL-DG2</a> <a class="working-group-list__title" href="/committees/cc/ccl/wg/ccl-dg2">CCL Discussion Group on Thermal Expansion</a></div> </div> </div> <div class="working-group-list__item"> <div class="working-group-list__link"> <div> <div class="working-group-list__picto"> </div> </div> <div><a class="working-group-list__id" href="/committees/cc/ccl/wg/ccl-dg3">CCL-DG3</a> <a class="working-group-list__title" href="/committees/cc/ccl/wg/ccl-dg3">CCL Discussion Group on Angle</a></div> </div> </div> <div class="working-group-list__item"> <div class="working-group-list__link"> <div> <div class="working-group-list__picto"> </div> </div> <div><a class="working-group-list__id" href="/committees/cc/ccl/wg/ccl-dg4">CCL-DG4</a> <a class="working-group-list__title" href="/committees/cc/ccl/wg/ccl-dg4">CCL Discussion Group on Cylindrical Diameter Standards</a></div> </div> </div> <div class="working-group-list__item"> <div class="working-group-list__link"> <div> <div class="working-group-list__picto"> </div> </div> <div><a class="working-group-list__id" href="/committees/cc/ccl/wg/ccl-dg5">CCL-DG5</a> <a class="working-group-list__title" href="/committees/cc/ccl/wg/ccl-dg5">CCL Discussion Group on Step Gauges</a></div> </div> </div> <div class="working-group-list__item"> <div class="working-group-list__link"> <div> <div class="working-group-list__picto"> </div> </div> <div><a class="working-group-list__id" href="/committees/cc/ccl/wg/ccl-dg7">CCL-DG7</a> <a class="working-group-list__title" href="/committees/cc/ccl/wg/ccl-dg7">CCL Discussion Group on Linescales</a></div> </div> </div> <div class="working-group-list__item"> <div class="working-group-list__link"> <div> <div class="working-group-list__picto"> </div> </div> <div><a class="working-group-list__id" href="/committees/cc/ccl/wg/ccl-dg8">CCL-DG8</a> <a class="working-group-list__title" href="/committees/cc/ccl/wg/ccl-dg8">CCL Discussion Group on Surface texture</a></div> </div> </div> </div> </div> </div> <i> </i> </div> </div> </div> </div> </div> </section> </div> <div class="portlet-boundary portlet-boundary_CommitteePublications_ portlet-static portlet-static-end bipm-lame-grey " id="p_p_id_CommitteePublications_INSTANCE_cPKH07n2IwWY_"> <span id="p_CommitteePublications_INSTANCE_cPKH07n2IwWY"></span> <section class="portlet" id="portlet_CommitteePublications_INSTANCE_cPKH07n2IwWY"> <div class="portlet-content"> <div class="autofit-float autofit-row portlet-header"> <div class="autofit-col autofit-col-expand"> <h2 class="portlet-title-text">Publications</h2> </div> </div> <div class=" portlet-content-container"> <div class="portlet-body"> <p class="title-secondary publications__portlettitle"> Publications </p> <div class="publications__toolbar"> <div><div class=""><nav class="management-bar navbar navbar-expand-md management-bar-light"><div class="container-fluid container-fluid-max-xl"><ul class="navbar-nav"><li class="nav-item"><a class="link-unstyled nav-link nav-link-monospaced"><svg class="lexicon-icon lexicon-icon-order-list-up" role="presentation" viewBox="0 0 512 512" ><use xlink:href="https://www.bipm.org/o/bipm-theme/images/clay/icons.svg#order-list-up" /></svg></a></li></ul><ul class="navbar-nav"><li class="nav-item navbar-breakpoint-d-none"><button class="nav-link nav-link-monospaced btn btn-monospaced btn-unstyled" type="button"><svg class="lexicon-icon lexicon-icon-search" role="presentation" viewBox="0 0 512 512" ><use xlink:href="https://www.bipm.org/o/bipm-theme/images/clay/icons.svg#search" /></svg></button></li><li class="nav-item"><div class="dropdown"><button aria-label="Show View Options" class="dropdown-toggle nav-link nav-link-monospaced btn btn-monospaced btn btn-unstyled" type="button"><svg class="lexicon-icon lexicon-icon-cards2" role="presentation" viewBox="0 0 512 512" ><use xlink:href="https://www.bipm.org/o/bipm-theme/images/clay/icons.svg#cards2" /></svg></button></div></li></ul></div></nav></div><div id="sltr"></div></div> </div> <p class="title-secondary title-secondary--small"> Strategy documents </p> <div class="publications"> <div class="publications__content"> <a href="https://www.bipm.org/documents/20126/41414762/CCL+Strategy/0f4af537-1729-b44a-e39e-f0023e439435" class="title-third"> [CCL] CCL Strategy (2018) </a> <p class="publications__body"></p> <p class="publications__body"></p> </div> </div> <p class="title-secondary title-secondary--small"> Meeting reports </p> <div class="publications"> <div class="publications__content"> <a href="https://www.bipm.org/documents/20126/64810889/18th+meeting+%282021%29/d9a348b1-f9ac-da6a-1326-66f122cf6adf" class="title-third"> [CCL] 18th meeting (2021) </a> <p class="publications__body"></p> <p class="publications__body"></p> </div> <div class="publications__content"> <a href="https://www.bipm.org/documents/20126/30125678/CCL17.pdf/12ec4f32-b2c0-2fff-d0a6-8ed4ca2b2a39" class="title-third"> [CCL] 17th meeting (2018) </a> <p class="publications__body"></p> <p class="publications__body"></p> </div> </div> <p class="title-secondary title-secondary--small"> Guidance documents on the CIPM MRA </p> <div class="publications"> <div class="publications__content"> <a href="https://www.bipm.org/documents/20126/30125568/CCL-GD-1+Running+of+MRA+comparisons+in+length+metrology+and+monitoring+their+impact+on+CMCs/974865cb-9ff5-47b4-d1a0-18d42aae05f1" class="title-third"> [CCL] CCL-GD-1 <br>Running of MRA comparisons in length metrology and monitoring their impact on CMCs </a> <p class="publications__body"></p> <p class="publications__body"></p> </div> </div> <div class="list-members__footer"> <a class="button-primary" href="/committees/cc/ccl/publications" role="button"> All publications </a> </div> </div> </div> </div> </section> </div> <div class="portlet-boundary portlet-boundary_com_liferay_journal_content_web_portlet_JournalContentPortlet_ portlet-static portlet-static-end bipm-lame-white portlet-journal-content " id="p_p_id_com_liferay_journal_content_web_portlet_JournalContentPortlet_INSTANCE_lGTtHEuHekGE_"> <span id="p_com_liferay_journal_content_web_portlet_JournalContentPortlet_INSTANCE_lGTtHEuHekGE"></span> <section class="portlet" id="portlet_com_liferay_journal_content_web_portlet_JournalContentPortlet_INSTANCE_lGTtHEuHekGE"> <div class="portlet-content"> <div class="autofit-float autofit-row portlet-header"> <div class="autofit-col autofit-col-expand"> <h2 class="portlet-title-text">ccl-mission</h2> </div> <div class="autofit-col autofit-col-end"> <div class="autofit-section"> <div class="visible-interaction"> </div> </div> </div> </div> <div class=" portlet-content-container"> <div class="portlet-body"> <div class="" data-fragments-editor-item-id="46722-25841367" data-fragments-editor-item-type="fragments-editor-mapped-item" > <div class="journal-content-article " data-analytics-asset-id="25841363" data-analytics-asset-title="ccl-mission" data-analytics-asset-type="web-content"> <h2>Mission</h2> <p>The Consultative Committee for the Definition of the Metre (CCDM) was set up in 1952. Its name was changed to Consultative Committee for Length by the CIPM in 1997.</p> <p>Present activities concern matters related to the definition and realization of the metre, practical length and angle measurement, and advice to the CIPM in the field of length metrology.</p> </div> </div> </div> </div> </div> </section> </div> <div class="portlet-boundary portlet-boundary_com_liferay_asset_publisher_web_portlet_AssetPublisherPortlet_ portlet-static portlet-static-end bipm-lame-grey portlet-asset-publisher " id="p_p_id_com_liferay_asset_publisher_web_portlet_AssetPublisherPortlet_INSTANCE_iI6AOQHGgc1H_"> <span id="p_com_liferay_asset_publisher_web_portlet_AssetPublisherPortlet_INSTANCE_iI6AOQHGgc1H"></span> <section class="portlet" id="portlet_com_liferay_asset_publisher_web_portlet_AssetPublisherPortlet_INSTANCE_iI6AOQHGgc1H"> <div class="portlet-content"> <div class="autofit-float autofit-row portlet-header"> <div class="autofit-col autofit-col-expand"> <h2 class="portlet-title-text">Asset Publisher</h2> </div> </div> <div class=" portlet-content-container"> <div class="portlet-body"> <p class="asset-entries-group-label h3">Reports and announcements</p> <div class="bipm-list announcements"> <div class="bipm-list__content bipm-list__content--announcements"> <div class="row align-items-center"> <div class="col-auto pr-0"> <a href="/documents/20126/262478877/CIPM2024-Session-II-EN/1dbe278e-5fd0-3504-1b08-533f90b68f36"> <img class="announcements-icon" src="https://www.bipm.org/documents/20126/62691511/download.png/7a8551fa-053a-3018-8617-edd277605a05?version=1.1&t=1635239522317&download=true"/> </a> </div> <div class="col"> <a href="/documents/20126/262478877/CIPM2024-Session-II-EN/1dbe278e-5fd0-3504-1b08-533f90b68f36"> <h3 class="title-third">Report of Session II of the 113th meeting of the CIPM (2024)</h3> </a> </div> </div> </div> <div class="bipm-list__content bipm-list__content--announcements"> <div class="row align-items-center"> <div class="col-auto pr-0"> <a href="/documents/20126/259201574/WP-report-Jan-Dec2023 - Annual review/7ca07940-381e-c649-c727-a0a5223f6f41"> <img class="announcements-icon" src="https://www.bipm.org/documents/20126/62691511/news-bipm.png/7d6ee8d1-7f9b-5eab-539c-e616a6e95169?version=1.2&t=1635348967097&download=true"/> </a> </div> <div class="col"> <a href="/documents/20126/259201574/WP-report-Jan-Dec2023 - Annual review/7ca07940-381e-c649-c727-a0a5223f6f41"> <h3 class="title-third">Annual Review Supplement - Activities of the BIPM Departments 2023</h3> </a> </div> </div> </div> <div class="bipm-list__content bipm-list__content--announcements"> <div class="row align-items-center"> <div class="col-auto pr-0"> <a href="/documents/20126/259201546/Annual Review 2023_FINAL/6079276a-e338-890d-b7eb-e74842519d11"> <img class="announcements-icon" src="https://www.bipm.org/documents/20126/62691511/news-bipm.png/7d6ee8d1-7f9b-5eab-539c-e616a6e95169?version=1.2&t=1635348967097&download=true"/> </a> </div> <div class="col"> <a href="/documents/20126/259201546/Annual Review 2023_FINAL/6079276a-e338-890d-b7eb-e74842519d11"> <h3 class="title-third">BIPM Annual Review 2023/2024</h3> </a> </div> </div> </div> <div class="bipm-list__content bipm-list__content--announcements"> <div class="row align-items-center"> <div class="col-auto pr-0"> <a href="/documents/20126/248048736/CIPM2024-Session-I-EN/9dd8f19c-93a8-8230-fa61-0ab97036bfd1"> <img class="announcements-icon" src="https://www.bipm.org/documents/20126/62691511/download.png/7a8551fa-053a-3018-8617-edd277605a05?version=1.1&t=1635239522317&download=true"/> </a> </div> <div class="col"> <a href="/documents/20126/248048736/CIPM2024-Session-I-EN/9dd8f19c-93a8-8230-fa61-0ab97036bfd1"> <h3 class="title-third">Report of Session I of the 113th meeting of the CIPM (2024)</h3> </a> </div> </div> </div> <div class="bipm-list__content bipm-list__content--announcements"> <div class="row align-items-center"> <div class="col-auto pr-0"> <a href="/documents/20126/234853367/CGPM2022/db61a371-f046-c7b4-a860-80bb798096b6"> <img class="announcements-icon" src="https://www.bipm.org/documents/20126/62691511/download.png/7a8551fa-053a-3018-8617-edd277605a05?version=1.1&t=1635239522317&download=true"/> </a> </div> <div class="col"> <a href="/documents/20126/234853367/CGPM2022/db61a371-f046-c7b4-a860-80bb798096b6"> <h3 class="title-third">Proceedings of the <nobr>27th meeting</nobr> of the CGPM (2022)</h3> </a> </div> </div> </div> <div class="bipm-list__content bipm-list__content--announcements"> <div class="row align-items-center"> <div class="col-auto pr-0"> <a href="/documents/20126/220989730/CIPM112/205c84da-6d72-8253-71c8-cf91f585c601"> <img class="announcements-icon" src="https://www.bipm.org/o/bipm-theme/images/download.svg"/> </a> </div> <div class="col"> <a href="/documents/20126/220989730/CIPM112/205c84da-6d72-8253-71c8-cf91f585c601"> <h3 class="title-third">Report of the 112th meeting of the CIPM (2023)</h3> </a> </div> </div> </div> <div class="bipm-list__content bipm-list__content--announcements"> <div class="row align-items-center"> <div class="col-auto pr-0"> <a href="/bipm-workshops/quantum-tech"> <img class="announcements-icon" src="https://www.bipm.org/documents/20126/62691511/calendar.png/141666aa-2760-58e0-9aa3-88c1d0758e62?version=1.1&t=1635239537426&download=true"/> </a> </div> <div class="col"> <a href="/bipm-workshops/quantum-tech"> <h3 class="title-third">BIPM Workshop on Quantum Technologies</h3> </a> </div> </div> </div> <div class="bipm-list__content bipm-list__content--announcements"> <div class="row align-items-center"> <div class="col-auto pr-0"> <a href="/documents/20126/143461860/JCTLM-Newsletter-2023/931ab35a-10cb-a836-5cd7-4402e0b71076"> <img class="announcements-icon" src="https://www.bipm.org/documents/20126/62691511/download.png/7a8551fa-053a-3018-8617-edd277605a05?version=1.1&t=1635239522317&download=true"/> </a> </div> <div class="col"> <a href="/documents/20126/143461860/JCTLM-Newsletter-2023/931ab35a-10cb-a836-5cd7-4402e0b71076"> <h3 class="title-third">JCTLM Newsletter - Issue 10 - October 2023</h3> </a> </div> </div> </div> <div class="bipm-list__content bipm-list__content--announcements"> <div class="row align-items-center"> <div class="col-auto pr-0"> <a href="/committees/fo/forum-md/wg/forum-dig/2023-11-21"> <img class="announcements-icon" src="https://www.bipm.org/documents/20126/62691511/calendar.png/141666aa-2760-58e0-9aa3-88c1d0758e62?version=1.1&t=1635239537426&download=true"/> </a> </div> <div class="col"> <a href="/committees/fo/forum-md/wg/forum-dig/2023-11-21"> <h3 class="title-third">Kickoff Meeting of the Forum on Metrology and Digitalization</h3> </a> </div> </div> </div> <div class="bipm-list__content bipm-list__content--announcements"> <div class="row align-items-center"> <div class="col-auto pr-0"> <a href="/committees/ot/bipm-ws/wg/bipm-ws-dig-ref/2023-10-12"> <img class="announcements-icon" src="https://www.bipm.org/documents/20126/62691511/calendar.png/141666aa-2760-58e0-9aa3-88c1d0758e62?version=1.1&t=1635239537426&download=true"/> </a> </div> <div class="col"> <a href="/committees/ot/bipm-ws/wg/bipm-ws-dig-ref/2023-10-12"> <h3 class="title-third">BIPM webinar on Digital References for Metrology</h3> </a> </div> </div> </div> <div class="bipm-list__content bipm-list__content--announcements"> <div class="row align-items-center"> <div class="col-auto pr-0"> <a href="/documents/20126/109067819/Annual Review 2022_240723_WEB/93e4556e-b66a-275b-b18f-a4cc82405e3d"> <img class="announcements-icon" src="https://www.bipm.org/documents/20126/62691511/news-bipm.png/7d6ee8d1-7f9b-5eab-539c-e616a6e95169?version=1.2&t=1635348967097&download=true"/> </a> </div> <div class="col"> <a href="/documents/20126/109067819/Annual Review 2022_240723_WEB/93e4556e-b66a-275b-b18f-a4cc82405e3d"> <h3 class="title-third">BIPM Annual Review 2022/2023</h3> </a> </div> </div> </div> <div class="bipm-list__content bipm-list__content--announcements"> <div class="row align-items-center"> <div class="col-auto pr-0"> <a href="/documents/20126/77423330/CIPM111.pdf/2c75a997-8250-e1c3-f7f2-afe14b024f90"> <img class="announcements-icon" src="https://www.bipm.org/documents/20126/62691511/download.png/7a8551fa-053a-3018-8617-edd277605a05?version=1.1&t=1635239522317&download=true"/> </a> </div> <div class="col"> <a href="/documents/20126/77423330/CIPM111.pdf/2c75a997-8250-e1c3-f7f2-afe14b024f90"> <h3 class="title-third">Report of the 111th meeting of the CIPM (2022)</h3> </a> </div> </div> </div> <div class="bipm-list__content bipm-list__content--announcements"> <div class="row align-items-center"> <div class="col-auto pr-0"> <a href="/documents/20126/77765681/Resolutions-2022.pdf/281f3160-fc56-3e63-dbf7-77b76500990f"> <img class="announcements-icon" src="https://www.bipm.org/documents/20126/62691511/news-other.png/22635628-7ffe-f9fb-a552-f102a0db9f48?version=1.2&t=1635348984626&download=true"/> </a> </div> <div class="col"> <a href="/documents/20126/77765681/Resolutions-2022.pdf/281f3160-fc56-3e63-dbf7-77b76500990f"> <h3 class="title-third">Resolutions adopted at the 27th meeting of the CGPM</h3> </a> </div> </div> </div> <div class="bipm-list__content bipm-list__content--announcements"> <div class="row align-items-center"> <div class="col-auto pr-0"> <a href="/documents/20126/82507584/RapportBIPM-2023-01.pdf/ff5aac7a-56d7-4ff7-7de1-04d024fedb65"> <img class="announcements-icon" src="https://www.bipm.org/documents/20126/62691511/news-bipm.png/7d6ee8d1-7f9b-5eab-539c-e616a6e95169?version=1.2&t=1635348967097&download=true"/> </a> </div> <div class="col"> <a href="/documents/20126/82507584/RapportBIPM-2023-01.pdf/ff5aac7a-56d7-4ff7-7de1-04d024fedb65"> <h3 class="title-third">CC survey on the digital transformation</h3> </a> </div> </div> </div> <div class="bipm-list__content bipm-list__content--announcements"> <div class="row align-items-center"> <div class="col-auto pr-0"> <a href="https://doi.org/10.1088/1681-7575/ac7fce"> <img class="announcements-icon" src="https://www.bipm.org/documents/20126/62691511/metrologia.png/a16303fe-dc3e-e374-2c90-15619ac33a86?version=1.1&t=1635239495540&download=true"/> </a> </div> <div class="col"> <a href="https://doi.org/10.1088/1681-7575/ac7fce"> <h3 class="title-third">A digital framework for realising the SI - a proposal for the metre</h3> </a> </div> </div> </div> <div class="bipm-list__content bipm-list__content--announcements"> <div class="row align-items-center"> <div class="col-auto pr-0"> <a href="/committees/ci/cipm/111-_2-2022"> <img class="announcements-icon" src="https://www.bipm.org/documents/20126/62691511/bipm-link.png/a6bb2dd2-78be-8c09-66cf-ab55cf481475?version=1.1&t=1635239552709&download=true"/> </a> </div> <div class="col"> <a href="/committees/ci/cipm/111-_2-2022"> <h3 class="title-third">Decisions of the CIPM (June 2022)</h3> </a> </div> </div> </div> <div class="bipm-list__content bipm-list__content--announcements"> <div class="row align-items-center"> <div class="col-auto pr-0"> <a href="/documents/20126/71427657/Annual Review 2021.pdf/b86699a6-6dd3-1045-2d5a-d6fe730e3ea7"> <img class="announcements-icon" src="https://www.bipm.org/documents/20126/62691511/news-bipm.png/7d6ee8d1-7f9b-5eab-539c-e616a6e95169?version=1.2&t=1635348967097&download=true"/> </a> </div> <div class="col"> <a href="/documents/20126/71427657/Annual Review 2021.pdf/b86699a6-6dd3-1045-2d5a-d6fe730e3ea7"> <h3 class="title-third">BIPM Annual Review 2021/2022</h3> </a> </div> </div> </div> <div class="bipm-list__content bipm-list__content--announcements"> <div class="row align-items-center"> <div class="col-auto pr-0"> <a href="/documents/20126/71151362/CIPM110.pdf/7ee21a12-e835-93d9-d69e-220dd8b34fe6"> <img class="announcements-icon" src="https://www.bipm.org/documents/20126/62691511/download.png/7a8551fa-053a-3018-8617-edd277605a05?version=1.1&t=1635239522317&download=true"/> </a> </div> <div class="col"> <a href="/documents/20126/71151362/CIPM110.pdf/7ee21a12-e835-93d9-d69e-220dd8b34fe6"> <h3 class="title-third">Report of the 110th meeting of the CIPM (2021)</h3> </a> </div> </div> </div> <div class="bipm-list__content bipm-list__content--announcements"> <div class="row align-items-center"> <div class="col-auto pr-0"> <a href="https://youtu.be/0OFRAadYsd4"> <img class="announcements-icon" src="https://www.bipm.org/documents/20126/62691511/external-link.png/8757448c-cce7-3578-91be-aef0267f812a?version=1.1&t=1635239508105&download=true"/> </a> </div> <div class="col"> <a href="https://youtu.be/0OFRAadYsd4"> <h3 class="title-third">CCRI webinar on Git for Metrology - video available</h3> </a> </div> </div> </div> <div class="bipm-list__content bipm-list__content--announcements"> <div class="row align-items-center"> <div class="col-auto pr-0"> <a href="/documents/20126/66742098/Draft-Resolutions-2022.pdf/2e8e53df-7a14-3fc8-8a04-42dd47df1a04"> <img class="announcements-icon" src="https://www.bipm.org/documents/20126/62691511/download.png/7a8551fa-053a-3018-8617-edd277605a05?version=1.1&t=1635239522317&download=true"/> </a> </div> <div class="col"> <a href="/documents/20126/66742098/Draft-Resolutions-2022.pdf/2e8e53df-7a14-3fc8-8a04-42dd47df1a04"> <h3 class="title-third">Draft Resolutions - 27th CGPM meeting (2022)</h3> </a> </div> </div> </div> <div class="bipm-list__content bipm-list__content--announcements"> <div class="row align-items-center"> <div class="col-auto pr-0"> <a href="/documents/20126/62746264/BIPM-Strategic-Plan-2022_Final _2021_10_25.pdf/811b280b-bfda-497e-d7cd-0b4fb5721941"> <img class="announcements-icon" src="https://www.bipm.org/documents/20126/62691511/news-other.png/22635628-7ffe-f9fb-a552-f102a0db9f48?version=1.2&t=1635348984626&download=true"/> </a> </div> <div class="col"> <a href="/documents/20126/62746264/BIPM-Strategic-Plan-2022_Final _2021_10_25.pdf/811b280b-bfda-497e-d7cd-0b4fb5721941"> <h3 class="title-third">BIPM Strategic Plan 2022</h3> </a> </div> </div> </div> <div class="bipm-list__content bipm-list__content--announcements"> <div class="row align-items-center"> <div class="col-auto pr-0"> <a href="/documents/20126/64258128/CIPM2021-Session-II-EN.pdf/155c4abe-0e6a-0062-b361-cccc022a4638"> <img class="announcements-icon" src="https://www.bipm.org/documents/20126/62691511/download.png/7a8551fa-053a-3018-8617-edd277605a05?version=1.1&t=1635239522317&download=true"/> </a> </div> <div class="col"> <a href="/documents/20126/64258128/CIPM2021-Session-II-EN.pdf/155c4abe-0e6a-0062-b361-cccc022a4638"> <h3 class="title-third">Report of Session II of the 110th meeting of the CIPM (2021)</h3> </a> </div> </div> </div> <div class="bipm-list__content bipm-list__content--announcements"> <div class="row align-items-center"> <div class="col-auto pr-0"> <a href="/documents/20126/64810889/18th meeting (2021)/d9a348b1-f9ac-da6a-1326-66f122cf6adf"> <img class="announcements-icon" src="https://www.bipm.org/o/bipm-theme/images/download.svg"/> </a> </div> <div class="col"> <a href="/documents/20126/64810889/18th meeting (2021)/d9a348b1-f9ac-da6a-1326-66f122cf6adf"> <h3 class="title-third">Report of the 18th meeting of the CCL (2021)</h3> </a> </div> </div> </div> <div class="bipm-list__content bipm-list__content--announcements"> <div class="row align-items-center"> <div class="col-auto pr-0"> <a href=""> <img class="announcements-icon" src="https://www.bipm.org/documents/20126/62691511/download.png/7a8551fa-053a-3018-8617-edd277605a05?version=1.1&t=1635239522317&download=true"/> </a> </div> <div class="col"> <a href=""> <h3 class="title-third">Report of Session I of the 110th meeting of the CIPM (2021)</h3> </a> </div> </div> </div> <div class="bipm-list__content bipm-list__content--announcements"> <div class="row align-items-center"> <div class="col-auto pr-0"> <a href="https://doi.org/10.1088/1681-7575/ac1456"> <img class="announcements-icon" src="https://www.bipm.org/documents/20126/62691511/metrologia.png/a16303fe-dc3e-e374-2c90-15619ac33a86?version=1.1&t=1635239495540&download=true"/> </a> </div> <div class="col"> <a href="https://doi.org/10.1088/1681-7575/ac1456"> <h3 class="title-third">Metrologia - A review of approaches for the practical realization of traceable length metrology from <nobr>10<sup>−11</sup> m</nobr> to <nobr>10<sup>13</sup> m</nobr></h3> </a> </div> </div> </div> <div class="bipm-list__content bipm-list__content--announcements"> <div class="row align-items-center"> <div class="col-auto pr-0"> <a href="/documents/20126/58355060/Annual_Review_2020_FINAL.pdf/0a7107f3-4b22-9939-40c9-4ce7400fa646"> <img class="announcements-icon" src="https://www.bipm.org/documents/20126/62691511/news-bipm.png/7d6ee8d1-7f9b-5eab-539c-e616a6e95169?version=1.2&t=1635348967097&download=true"/> </a> </div> <div class="col"> <a href="/documents/20126/58355060/Annual_Review_2020_FINAL.pdf/0a7107f3-4b22-9939-40c9-4ce7400fa646"> <h3 class="title-third">BIPM Annual Review 2020/2021</h3> </a> </div> </div> </div> <div class="bipm-list__content bipm-list__content--announcements"> <div class="row align-items-center"> <div class="col-auto pr-0"> <a href="/documents/20126/55293492/CIPM2020.pdf/a9a65fdf-0293-8044-2bc3-8f73560861f0"> <img class="announcements-icon" src="https://www.bipm.org/documents/20126/62691511/download.png/7a8551fa-053a-3018-8617-edd277605a05?version=1.1&t=1635239522317&download=true"/> </a> </div> <div class="col"> <a href="/documents/20126/55293492/CIPM2020.pdf/a9a65fdf-0293-8044-2bc3-8f73560861f0"> <h3 class="title-third">Report of the 109th meeting of the CIPM (2020)</h3> </a> </div> </div> </div> <div class="bipm-list__content bipm-list__content--announcements"> <div class="row align-items-center"> <div class="col-auto pr-0"> <a href="/committees/jc/jcrb/43-2021"> <img class="announcements-icon" src="https://www.bipm.org/documents/20126/62691511/news-other.png/22635628-7ffe-f9fb-a552-f102a0db9f48?version=1.2&t=1635348984626&download=true"/> </a> </div> <div class="col"> <a href="/committees/jc/jcrb/43-2021"> <h3 class="title-third">Outcomes of the 43rd JCRB meeting (2021)</h3> </a> </div> </div> </div> <div class="bipm-list__content bipm-list__content--announcements"> <div class="row align-items-center"> <div class="col-auto pr-0"> <a href="https://iopscience.iop.org/journal/0026-1394/page/focus-issue-on-length-metrology"> <img class="announcements-icon" src="https://www.bipm.org/documents/20126/62691511/metrologia.png/a16303fe-dc3e-e374-2c90-15619ac33a86?version=1.1&t=1635239495540&download=true"/> </a> </div> <div class="col"> <a href="https://iopscience.iop.org/journal/0026-1394/page/focus-issue-on-length-metrology"> <h3 class="title-third">Metrologia: Focus on Length Metrology</h3> </a> </div> </div> </div> </div> </div> </div> </div> </section> </div> </div> </div> </div> </div> <form action="#" aria-hidden="true" class="hide" id="hrefFm" method="post" name="hrefFm"><span></span><button hidden type="submit">Hidden</button></form> </div> </main> <footer id="footer" class="footer" role="contentinfo"> <div class="container"> <div class="row flex-lg-row-reverse"> <div class="col-12 col-lg-9 pt-2"> <div class="footer-nav"> <div class="portlet-boundary portlet-boundary_com_liferay_site_navigation_menu_web_portlet_SiteNavigationMenuPortlet_ portlet-static portlet-static-end portlet-barebone portlet-navigation " id="p_p_id_com_liferay_site_navigation_menu_web_portlet_SiteNavigationMenuPortlet_INSTANCE_navigation_footer_"> <span id="p_com_liferay_site_navigation_menu_web_portlet_SiteNavigationMenuPortlet_INSTANCE_navigation_footer"></span> <section class="portlet" id="portlet_com_liferay_site_navigation_menu_web_portlet_SiteNavigationMenuPortlet_INSTANCE_navigation_footer"> <div class="portlet-content"> <div class=" portlet-content-container"> <div class="portlet-body"> <div id="navbar_com_liferay_site_navigation_menu_web_portlet_SiteNavigationMenuPortlet_INSTANCE_navigation_footer"> <ul aria-label="Site Pages" class="navbar-blank navbar-nav navbar-site" role="menubar"> <li class="lfr-nav-item nav-item" id="layout_com_liferay_site_navigation_menu_web_portlet_SiteNavigationMenuPortlet_INSTANCE_navigation_footer_58818" role="presentation"> <a class="nav-link text-truncate" href='https://www.bipm.org/en/contact' role="menuitem"> <span class="text-truncate"> Contact </span> </a> </li> <li class="lfr-nav-item nav-item" id="layout_com_liferay_site_navigation_menu_web_portlet_SiteNavigationMenuPortlet_INSTANCE_navigation_footer_58822" role="presentation"> <a class="nav-link text-truncate" href='https://www.bipm.org/en/access' role="menuitem"> <span class="text-truncate"> Access </span> </a> </li> <li class="lfr-nav-item nav-item" id="layout_com_liferay_site_navigation_menu_web_portlet_SiteNavigationMenuPortlet_INSTANCE_navigation_footer_51932878" role="presentation"> <a class="nav-link text-truncate" href='https://www.bipm.org/en/sitemap' role="menuitem"> <span class="text-truncate"> Sitemap </span> </a> </li> <li class="lfr-nav-item nav-item" id="layout_com_liferay_site_navigation_menu_web_portlet_SiteNavigationMenuPortlet_INSTANCE_navigation_footer_58830" role="presentation"> <a class="nav-link text-truncate" href='https://www.bipm.org/en/copyright' role="menuitem"> <span class="text-truncate"> Copyright </span> </a> </li> <li class="lfr-nav-item nav-item" id="layout_com_liferay_site_navigation_menu_web_portlet_SiteNavigationMenuPortlet_INSTANCE_navigation_footer_58834" role="presentation"> <a class="nav-link text-truncate" href='https://www.bipm.org/en/confidentiality' role="menuitem"> <span class="text-truncate"> Confidentiality </span> </a> </li> </ul> </div> <script> AUI().use( 'liferay-navigation-interaction', function(A) { (function() { var $ = AUI.$;var _ = AUI._; var navigation = A.one('#navbar_com_liferay_site_navigation_menu_web_portlet_SiteNavigationMenuPortlet_INSTANCE_navigation_footer'); Liferay.Data.NAV_INTERACTION_LIST_SELECTOR = '.navbar-site'; Liferay.Data.NAV_LIST_SELECTOR = '.navbar-site'; if (navigation) { navigation.plug(Liferay.NavigationInteraction); } })(); }); </script> </div> </div> </div> </section> </div> <div class="footer-nav__quicklinks" data-dismiss="modal" data-toggle="modal" data-target="#second-nav-quicklinks"> <p class="footer-nav__quicklinks-content">Quick links</p> <div class="footer-nav__quicklinks-picto"></div> </div> <div class="footer-nav__language"> <div class="portlet-content"> <a class="language-entry-long-text" href="/fr/committees/cc/ccl"> français </a> </div> </div> </div> <div id="social-media-links"> <ul class="nav flex-row"> <li class="mx-2"> <div id="bipm-e-news"> <a class="icon-bipm-e-news icon-5x text-white" href="https://bipm.us12.list-manage.com/subscribe?u=7e9cfbc89c463049962327361&id=c1cd4cb2f6" target="_blank"><span class="hide">Bipm e-news</span> </a> </div> </li> <li class="mx-2"> <div id="linked-in"> <a class="icon-linkedin icon-5x text-white" href="https://www.linkedin.com/company/bipm/posts/" target="_blank"><span class="hide">LinkedIn</span> </a> </div> </li> <li class="mx-2"> <div id="youtube"> <a class="icon-youtube icon-5x text-white" href="https://www.youtube.com/thebipm" target="_blank"><span class="hide">YouTube</span> </a> </div> </li> </ul> </div> </div> <div class="col-12 col-lg-3"> <div class="footer-infos"> <h2 class="footer-infos__title"> <img src="https://www.bipm.org/o/bipm-theme/images/BIPM-logo-name.svg" /> </h2> <p class="footer-infos__address">Pavillon de Breteuil</p> <p class="footer-infos__address">F-92312 Sèvres Cedex FRANCE</p> <p class="footer-infos__copyright">Copyright @ BIPM tous droits réservés</p> </div> </div> </div> </div> </footer> </div> <script type="text/javascript"> </script><script> </script> <script type="text/javascript"> // <![CDATA[ Liferay.currentURL = '\x2fen\x2fcommittees\x2fcc\x2fccl'; Liferay.currentURLEncoded = '\x252Fen\x252Fcommittees\x252Fcc\x252Fccl'; // ]]> </script> <script type="text/javascript"> // <![CDATA[ // ]]> </script> <script type="text/javascript"> function getValueByAttribute(node, attr) { return ( node.dataset[attr] || (node.parentElement && node.parentElement.dataset[attr]) ); } function sendAnalyticsEvent(anchor) { var fileEntryId = getValueByAttribute(anchor, 'analyticsFileEntryId'); var title = getValueByAttribute(anchor, 'analyticsFileEntryTitle'); var version = getValueByAttribute(anchor, 'analyticsFileEntryVersion'); if (fileEntryId) { Analytics.send('documentDownloaded', 'Document', { groupId: themeDisplay.getScopeGroupId(), fileEntryId, preview: !!window._com_liferay_document_library_analytics_isViewFileEntry, title, version, }); } } function handleDownloadClick(event) { if (window.Analytics) { if (event.target.nodeName.toLowerCase() === 'a') { sendAnalyticsEvent(event.target); } else if ( event.target.parentNode && event.target.parentNode.nodeName.toLowerCase() === 'a' ) { sendAnalyticsEvent(event.target.parentNode); } else if ( event.target.dataset.action === 'download' || event.target.querySelector('.lexicon-icon-download') || event.target.classList.contains('lexicon-icon-download') || (event.target.parentNode && event.target.parentNode.classList.contains( 'lexicon-icon-download' )) ) { var selectedFiles = document.querySelectorAll( '.portlet-document-library .entry-selector:checked' ); selectedFiles.forEach(({value}) => { var selectedFile = document.querySelector( '[data-analytics-file-entry-id="' + value + '"]' ); sendAnalyticsEvent(selectedFile); }); } } } Liferay.once('destroyPortlet', () => { document.body.removeEventListener('click', handleDownloadClick); }); Liferay.once('portletReady', () => { document.body.addEventListener('click', handleDownloadClick); }); (function() {var $ = AUI.$;var _ = AUI._; var onVote = function (event) { if (window.Analytics) { let title = event.contentTitle; if (!title) { const dmNode = document.querySelector( '[data-analytics-file-entry-id="' + event.classPK + '"]' ); if (dmNode) { title = dmNode.dataset.analyticsFileEntryTitle; } } Analytics.send('VOTE', 'Ratings', { className: event.className, classPK: event.classPK, ratingType: event.ratingType, score: event.score, title, }); } }; var onDestroyPortlet = function () { Liferay.detach('ratings:vote', onVote); Liferay.detach('destroyPortlet', onDestroyPortlet); }; Liferay.on('ratings:vote', onVote); Liferay.on('destroyPortlet', onDestroyPortlet); })(); (function() {var $ = AUI.$;var _ = AUI._; var onShare = function (data) { if (window.Analytics) { Analytics.send('shared', 'SocialBookmarks', { className: data.className, classPK: data.classPK, type: data.type, url: data.url, }); } }; var onDestroyPortlet = function () { Liferay.detach('socialBookmarks:share', onShare); Liferay.detach('destroyPortlet', onDestroyPortlet); }; Liferay.on('socialBookmarks:share', onShare); Liferay.on('destroyPortlet', onDestroyPortlet); })(); (function() {var $ = AUI.$;var _ = AUI._; var onDestroyPortlet = function () { Liferay.detach('messagePosted', onMessagePosted); Liferay.detach('destroyPortlet', onDestroyPortlet); }; Liferay.on('destroyPortlet', onDestroyPortlet); var onMessagePosted = function (event) { if (window.Analytics) { const eventProperties = { className: event.className, classPK: event.classPK, commentId: event.commentId, text: event.text, }; const blogNode = document.querySelector( '[data-analytics-asset-id="' + event.classPK + '"]' ); const dmNode = document.querySelector( '[data-analytics-file-entry-id="' + event.classPK + '"]' ); if (blogNode) { eventProperties.title = blogNode.dataset.analyticsAssetTitle; } else if (dmNode) { eventProperties.title = dmNode.dataset.analyticsFileEntryTitle; } Analytics.send('posted', 'Comment', eventProperties); } }; Liferay.on('messagePosted', onMessagePosted); })(); (function() {var $ = AUI.$;var _ = AUI._; function showDialog(uri, title) { Liferay.Util.openModal({ id: 'sharingDialog', iframeBodyCssClass: 'sharing-dialog', height: '475px', size: 'md', title: title, url: uri, }); } var Sharing = { manageCollaborators: function (classNameId, classPK) { var manageCollaboratorsParameters = { classNameId: classNameId, classPK: classPK, }; var manageCollaboratorsURL = Liferay.Util.PortletURL.createPortletURL( 'https://www.bipm.org/en/group/guest/~/control_panel/manage?p_p_id=com_liferay_sharing_web_portlet_ManageCollaboratorsPortlet&p_p_lifecycle=0&p_p_state=pop_up&p_p_auth=8M3Aivlh', manageCollaboratorsParameters ); showDialog( manageCollaboratorsURL.toString(), 'Manage Collaborators' ); }, share: function (classNameId, classPK, title) { var sharingParameters = { classNameId: classNameId, classPK: classPK, }; var sharingURL = Liferay.Util.PortletURL.createPortletURL( 'https://www.bipm.org/en/group/guest/~/control_panel/manage?p_p_id=com_liferay_sharing_web_portlet_SharingPortlet&p_p_lifecycle=0&p_p_state=pop_up&p_p_auth=nxuBMpgD', sharingParameters ); showDialog(sharingURL.toString(), title); }, }; Liferay.Sharing = Sharing; })(); if (window.svg4everybody && Liferay.Data.ICONS_INLINE_SVG) { svg4everybody( { polyfill: true, validate: function (src, svg, use) { return !src || !src.startsWith('#'); } } ); } Liferay.Portlet.register('CommitteePublications_INSTANCE_cPKH07n2IwWY'); Liferay.Portlet.onLoad( { canEditTitle: false, columnPos: 5, isStatic: 'end', namespacedId: 'p_p_id_CommitteePublications_INSTANCE_cPKH07n2IwWY_', portletId: 'CommitteePublications_INSTANCE_cPKH07n2IwWY', refreshURL: '\x2fen\x2fc\x2fportal\x2frender_portlet\x3fp_l_id\x3d1072792\x26p_p_id\x3dCommitteePublications_INSTANCE_cPKH07n2IwWY\x26p_p_lifecycle\x3d0\x26p_t_lifecycle\x3d0\x26p_p_state\x3dnormal\x26p_p_mode\x3dview\x26p_p_col_id\x3dcolumn-1\x26p_p_col_pos\x3d5\x26p_p_col_count\x3d8\x26p_p_isolated\x3d1\x26currentURL\x3d\x252Fen\x252Fcommittees\x252Fcc\x252Fccl', refreshURLData: {} } ); Liferay.Portlet.register('com_liferay_login_web_portlet_LoginPortlet'); Liferay.Portlet.onLoad( { canEditTitle: false, columnPos: 0, isStatic: 'end', namespacedId: 'p_p_id_com_liferay_login_web_portlet_LoginPortlet_', portletId: 'com_liferay_login_web_portlet_LoginPortlet', refreshURL: '\x2fen\x2fc\x2fportal\x2frender_portlet\x3fp_l_id\x3d1072792\x26p_p_id\x3dcom_liferay_login_web_portlet_LoginPortlet\x26p_p_lifecycle\x3d0\x26p_t_lifecycle\x3d0\x26p_p_state\x3dnormal\x26p_p_mode\x3dview\x26p_p_col_id\x3dnull\x26p_p_col_pos\x3dnull\x26p_p_col_count\x3dnull\x26p_p_static\x3d1\x26p_p_isolated\x3d1\x26currentURL\x3d\x252Fen\x252Fcommittees\x252Fcc\x252Fccl', refreshURLData: {} } ); Liferay.Portlet.register('committee_members_portlet'); Liferay.Portlet.onLoad( { canEditTitle: false, columnPos: 0, isStatic: 'end', namespacedId: 'p_p_id_committee_members_portlet_', portletId: 'committee_members_portlet', refreshURL: '\x2fen\x2fc\x2fportal\x2frender_portlet\x3fp_l_id\x3d1072792\x26p_p_id\x3dcommittee_members_portlet\x26p_p_lifecycle\x3d0\x26p_t_lifecycle\x3d0\x26p_p_state\x3dnormal\x26p_p_mode\x3dview\x26p_p_col_id\x3dcolumn-1\x26p_p_col_pos\x3d0\x26p_p_col_count\x3d8\x26p_p_isolated\x3d1\x26currentURL\x3d\x252Fen\x252Fcommittees\x252Fcc\x252Fccl', refreshURLData: {} } ); Liferay.Portlet.register('com_liferay_journal_content_web_portlet_JournalContentPortlet_INSTANCE_bIP4JtoDG80Z'); Liferay.Portlet.onLoad( { canEditTitle: false, columnPos: 3, isStatic: 'end', namespacedId: 'p_p_id_com_liferay_journal_content_web_portlet_JournalContentPortlet_INSTANCE_bIP4JtoDG80Z_', portletId: 'com_liferay_journal_content_web_portlet_JournalContentPortlet_INSTANCE_bIP4JtoDG80Z', refreshURL: '\x2fen\x2fc\x2fportal\x2frender_portlet\x3fp_l_id\x3d1072792\x26p_p_id\x3dcom_liferay_journal_content_web_portlet_JournalContentPortlet_INSTANCE_bIP4JtoDG80Z\x26p_p_lifecycle\x3d0\x26p_t_lifecycle\x3d0\x26p_p_state\x3dnormal\x26p_p_mode\x3dview\x26p_p_col_id\x3dcolumn-1\x26p_p_col_pos\x3d3\x26p_p_col_count\x3d8\x26p_p_isolated\x3d1\x26currentURL\x3d\x252Fen\x252Fcommittees\x252Fcc\x252Fccl', refreshURLData: {} } ); Liferay.Portlet.register('com_liferay_site_navigation_menu_web_portlet_SiteNavigationMenuPortlet_INSTANCE_navigation_metrology'); Liferay.Portlet.onLoad( { canEditTitle: false, columnPos: 0, isStatic: 'end', namespacedId: 'p_p_id_com_liferay_site_navigation_menu_web_portlet_SiteNavigationMenuPortlet_INSTANCE_navigation_metrology_', portletId: 'com_liferay_site_navigation_menu_web_portlet_SiteNavigationMenuPortlet_INSTANCE_navigation_metrology', refreshURL: '\x2fen\x2fc\x2fportal\x2frender_portlet\x3fp_l_id\x3d1072792\x26p_p_id\x3dcom_liferay_site_navigation_menu_web_portlet_SiteNavigationMenuPortlet_INSTANCE_navigation_metrology\x26p_p_lifecycle\x3d0\x26p_t_lifecycle\x3d0\x26p_p_state\x3dnormal\x26p_p_mode\x3dview\x26p_p_col_id\x3dnull\x26p_p_col_pos\x3dnull\x26p_p_col_count\x3dnull\x26p_p_static\x3d1\x26p_p_isolated\x3d1\x26currentURL\x3d\x252Fen\x252Fcommittees\x252Fcc\x252Fccl', refreshURLData: {} } ); Liferay.Portlet.register('com_liferay_site_navigation_menu_web_portlet_SiteNavigationMenuPortlet_INSTANCE_navigation_metrology'); Liferay.Portlet.onLoad( { canEditTitle: false, columnPos: 0, isStatic: 'end', namespacedId: 'p_p_id_com_liferay_site_navigation_menu_web_portlet_SiteNavigationMenuPortlet_INSTANCE_navigation_metrology_', portletId: 'com_liferay_site_navigation_menu_web_portlet_SiteNavigationMenuPortlet_INSTANCE_navigation_metrology', refreshURL: '\x2fen\x2fc\x2fportal\x2frender_portlet\x3fp_l_id\x3d1072792\x26p_p_id\x3dcom_liferay_site_navigation_menu_web_portlet_SiteNavigationMenuPortlet_INSTANCE_navigation_metrology\x26p_p_lifecycle\x3d0\x26p_t_lifecycle\x3d0\x26p_p_state\x3dnormal\x26p_p_mode\x3dview\x26p_p_col_id\x3dnull\x26p_p_col_pos\x3dnull\x26p_p_col_count\x3dnull\x26p_p_static\x3d1\x26p_p_isolated\x3d1\x26currentURL\x3d\x252Fen\x252Fcommittees\x252Fcc\x252Fccl', refreshURLData: {} } ); Liferay.Portlet.register('com_liferay_site_navigation_menu_web_portlet_SiteNavigationMenuPortlet_INSTANCE_navigation_footer'); Liferay.Portlet.onLoad( { canEditTitle: false, columnPos: 0, isStatic: 'end', namespacedId: 'p_p_id_com_liferay_site_navigation_menu_web_portlet_SiteNavigationMenuPortlet_INSTANCE_navigation_footer_', portletId: 'com_liferay_site_navigation_menu_web_portlet_SiteNavigationMenuPortlet_INSTANCE_navigation_footer', refreshURL: '\x2fen\x2fc\x2fportal\x2frender_portlet\x3fp_l_id\x3d1072792\x26p_p_id\x3dcom_liferay_site_navigation_menu_web_portlet_SiteNavigationMenuPortlet_INSTANCE_navigation_footer\x26p_p_lifecycle\x3d0\x26p_t_lifecycle\x3d0\x26p_p_state\x3dnormal\x26p_p_mode\x3dview\x26p_p_col_id\x3dnull\x26p_p_col_pos\x3dnull\x26p_p_col_count\x3dnull\x26p_p_static\x3d1\x26p_p_isolated\x3d1\x26currentURL\x3d\x252Fen\x252Fcommittees\x252Fcc\x252Fccl', refreshURLData: {} } ); Liferay.Portlet.register('com_liferay_site_navigation_menu_web_portlet_SiteNavigationMenuPortlet_INSTANCE_BipmMainMenuNavigation'); Liferay.Portlet.onLoad( { canEditTitle: false, columnPos: 0, isStatic: 'end', namespacedId: 'p_p_id_com_liferay_site_navigation_menu_web_portlet_SiteNavigationMenuPortlet_INSTANCE_BipmMainMenuNavigation_', portletId: 'com_liferay_site_navigation_menu_web_portlet_SiteNavigationMenuPortlet_INSTANCE_BipmMainMenuNavigation', refreshURL: '\x2fen\x2fc\x2fportal\x2frender_portlet\x3fp_l_id\x3d1072792\x26p_p_id\x3dcom_liferay_site_navigation_menu_web_portlet_SiteNavigationMenuPortlet_INSTANCE_BipmMainMenuNavigation\x26p_p_lifecycle\x3d0\x26p_t_lifecycle\x3d0\x26p_p_state\x3dnormal\x26p_p_mode\x3dview\x26p_p_col_id\x3dnull\x26p_p_col_pos\x3dnull\x26p_p_col_count\x3dnull\x26p_p_static\x3d1\x26p_p_isolated\x3d1\x26currentURL\x3d\x252Fen\x252Fcommittees\x252Fcc\x252Fccl', refreshURLData: {} } ); (function() {var $ = AUI.$;var _ = AUI._; var assetEntryId = ''; if (assetEntryId) { window.location.hash = assetEntryId; } })(); Liferay.Portlet.register('com_liferay_asset_publisher_web_portlet_AssetPublisherPortlet_INSTANCE_iI6AOQHGgc1H'); Liferay.Portlet.onLoad( { canEditTitle: false, columnPos: 7, isStatic: 'end', namespacedId: 'p_p_id_com_liferay_asset_publisher_web_portlet_AssetPublisherPortlet_INSTANCE_iI6AOQHGgc1H_', portletId: 'com_liferay_asset_publisher_web_portlet_AssetPublisherPortlet_INSTANCE_iI6AOQHGgc1H', refreshURL: '\x2fen\x2fc\x2fportal\x2frender_portlet\x3fp_l_id\x3d1072792\x26p_p_id\x3dcom_liferay_asset_publisher_web_portlet_AssetPublisherPortlet_INSTANCE_iI6AOQHGgc1H\x26p_p_lifecycle\x3d0\x26p_t_lifecycle\x3d0\x26p_p_state\x3dnormal\x26p_p_mode\x3dview\x26p_p_col_id\x3dcolumn-1\x26p_p_col_pos\x3d7\x26p_p_col_count\x3d8\x26p_p_isolated\x3d1\x26currentURL\x3d\x252Fen\x252Fcommittees\x252Fcc\x252Fccl', refreshURLData: {} } ); Liferay.Portlet.register('meetings_portlet'); Liferay.Portlet.onLoad( { canEditTitle: false, columnPos: 1, isStatic: 'end', namespacedId: 'p_p_id_meetings_portlet_', portletId: 'meetings_portlet', refreshURL: '\x2fen\x2fc\x2fportal\x2frender_portlet\x3fp_l_id\x3d1072792\x26p_p_id\x3dmeetings_portlet\x26p_p_lifecycle\x3d0\x26p_t_lifecycle\x3d0\x26p_p_state\x3dnormal\x26p_p_mode\x3dview\x26p_p_col_id\x3dcolumn-1\x26p_p_col_pos\x3d1\x26p_p_col_count\x3d8\x26p_p_isolated\x3d1\x26currentURL\x3d\x252Fen\x252Fcommittees\x252Fcc\x252Fccl', refreshURLData: {} } ); (function() {var $ = AUI.$;var _ = AUI._; var assetEntryId = ''; if (assetEntryId) { window.location.hash = assetEntryId; } })(); Liferay.Portlet.register('com_liferay_asset_publisher_web_portlet_AssetPublisherPortlet_INSTANCE_dFyK3vffnxwl'); Liferay.Portlet.onLoad( { canEditTitle: false, columnPos: 2, isStatic: 'end', namespacedId: 'p_p_id_com_liferay_asset_publisher_web_portlet_AssetPublisherPortlet_INSTANCE_dFyK3vffnxwl_', portletId: 'com_liferay_asset_publisher_web_portlet_AssetPublisherPortlet_INSTANCE_dFyK3vffnxwl', refreshURL: '\x2fen\x2fc\x2fportal\x2frender_portlet\x3fp_l_id\x3d1072792\x26p_p_id\x3dcom_liferay_asset_publisher_web_portlet_AssetPublisherPortlet_INSTANCE_dFyK3vffnxwl\x26p_p_lifecycle\x3d0\x26p_t_lifecycle\x3d0\x26p_p_state\x3dnormal\x26p_p_mode\x3dview\x26p_p_col_id\x3dcolumn-1\x26p_p_col_pos\x3d2\x26p_p_col_count\x3d8\x26p_p_isolated\x3d1\x26currentURL\x3d\x252Fen\x252Fcommittees\x252Fcc\x252Fccl', refreshURLData: {} } ); Liferay.Portlet.register('com_liferay_site_navigation_menu_web_portlet_SiteNavigationMenuPortlet_INSTANCE_navigation_quicklinks'); Liferay.Portlet.onLoad( { canEditTitle: false, columnPos: 0, isStatic: 'end', namespacedId: 'p_p_id_com_liferay_site_navigation_menu_web_portlet_SiteNavigationMenuPortlet_INSTANCE_navigation_quicklinks_', portletId: 'com_liferay_site_navigation_menu_web_portlet_SiteNavigationMenuPortlet_INSTANCE_navigation_quicklinks', refreshURL: '\x2fen\x2fc\x2fportal\x2frender_portlet\x3fp_l_id\x3d1072792\x26p_p_id\x3dcom_liferay_site_navigation_menu_web_portlet_SiteNavigationMenuPortlet_INSTANCE_navigation_quicklinks\x26p_p_lifecycle\x3d0\x26p_t_lifecycle\x3d0\x26p_p_state\x3dnormal\x26p_p_mode\x3dview\x26p_p_col_id\x3dnull\x26p_p_col_pos\x3dnull\x26p_p_col_count\x3dnull\x26p_p_static\x3d1\x26p_p_isolated\x3d1\x26currentURL\x3d\x252Fen\x252Fcommittees\x252Fcc\x252Fccl', refreshURLData: {} } ); Liferay.Portlet.register('com_liferay_journal_content_web_portlet_JournalContentPortlet_INSTANCE_DsJxKZabodD8'); Liferay.Portlet.onLoad( { canEditTitle: false, columnPos: 4, isStatic: 'end', namespacedId: 'p_p_id_com_liferay_journal_content_web_portlet_JournalContentPortlet_INSTANCE_DsJxKZabodD8_', portletId: 'com_liferay_journal_content_web_portlet_JournalContentPortlet_INSTANCE_DsJxKZabodD8', refreshURL: '\x2fen\x2fc\x2fportal\x2frender_portlet\x3fp_l_id\x3d1072792\x26p_p_id\x3dcom_liferay_journal_content_web_portlet_JournalContentPortlet_INSTANCE_DsJxKZabodD8\x26p_p_lifecycle\x3d0\x26p_t_lifecycle\x3d0\x26p_p_state\x3dnormal\x26p_p_mode\x3dview\x26p_p_col_id\x3dcolumn-1\x26p_p_col_pos\x3d4\x26p_p_col_count\x3d8\x26p_p_isolated\x3d1\x26currentURL\x3d\x252Fen\x252Fcommittees\x252Fcc\x252Fccl', refreshURLData: {} } ); Liferay.Portlet.register('com_liferay_journal_content_web_portlet_JournalContentPortlet_INSTANCE_lGTtHEuHekGE'); Liferay.Portlet.onLoad( { canEditTitle: false, columnPos: 6, isStatic: 'end', namespacedId: 'p_p_id_com_liferay_journal_content_web_portlet_JournalContentPortlet_INSTANCE_lGTtHEuHekGE_', portletId: 'com_liferay_journal_content_web_portlet_JournalContentPortlet_INSTANCE_lGTtHEuHekGE', refreshURL: '\x2fen\x2fc\x2fportal\x2frender_portlet\x3fp_l_id\x3d1072792\x26p_p_id\x3dcom_liferay_journal_content_web_portlet_JournalContentPortlet_INSTANCE_lGTtHEuHekGE\x26p_p_lifecycle\x3d0\x26p_t_lifecycle\x3d0\x26p_p_state\x3dnormal\x26p_p_mode\x3dview\x26p_p_col_id\x3dcolumn-1\x26p_p_col_pos\x3d6\x26p_p_col_count\x3d8\x26p_p_isolated\x3d1\x26currentURL\x3d\x252Fen\x252Fcommittees\x252Fcc\x252Fccl', refreshURLData: {} } ); </script><script type="module"> import {render} from '/o/portal-template-react-renderer-impl/__liferay__/index.js?t=1732534515090&languageId=en_US'; import {ManagementToolbar as componentModule} from '/o/frontend-taglib-clay/__liferay__/index.js?t=1732534515090&languageId=en_US'; Liferay.Loader.require( 'frontend-js-web/index', function(frontendJsWeb) { try { AUI().use( 'liferay-menu', function(A) { (function() { var $ = AUI.$;var _ = AUI._; var {delegate} = frontendJsWeb; delegate( document, 'focusin', '.portlet', function(event) { event.delegateTarget.closest('.portlet').classList.add('open'); } ); delegate( document, 'focusout', '.portlet', function(event) { event.delegateTarget.closest('.portlet').classList.remove('open'); } ); })(); (function() { var $ = AUI.$;var _ = AUI._; new Liferay.Menu(); var liferayNotices = Liferay.Data.notices; for (var i = 0; i < liferayNotices.length; i++) { Liferay.Util.openToast(liferayNotices[i]); } })(); (function() { var $ = AUI.$;var _ = AUI._; var {openToast} = frontendJsWeb; AUI().use( 'liferay-session', function() { Liferay.Session = new Liferay.SessionBase( { autoExtend: true, redirectOnExpire: false, redirectUrl: 'https\x3a\x2f\x2fwww\x2ebipm\x2eorg\x2fweb\x2fguest', sessionLength: 900, sessionTimeoutOffset: 70, warningLength: 60 } ); } ); })(); { render(componentModule, {"filterDropdownItems":null,"showInfoButton":false,"supportsBulkActions":true,"filterLabelItems":null,"initialCheckboxStatus":"unchecked","initialSelectAllButtonVisible":false,"searchFormMethod":"GET","componentId":null,"selectable":false,"infoPanelId":"_CommitteePublications_INSTANCE_cPKH07n2IwWY_infoPanelId","clearResultsURL":null,"searchActionURL":null,"locale":{"ISO3Country":"USA","ISO3Language":"eng","country":"US","displayCountry":"États-Unis","displayLanguage":"anglais","displayName":"anglais (États-Unis)","displayScript":"","displayVariant":"","extensionKeys":[],"language":"en","script":"","unicodeLocaleAttributes":[],"unicodeLocaleKeys":[],"variant":""},"searchInputAutoFocus":false,"showDesignImprovementsFF":false,"viewTypeItems":[{"icon":"cards2","active":true,"href":"https:\/\/www.bipm.org\/en\/committees\/cc\/ccl?p_p_id=CommitteePublications_INSTANCE_cPKH07n2IwWY&p_p_lifecycle=0&p_p_state=normal&p_p_mode=view&_CommitteePublications_INSTANCE_cPKH07n2IwWY_mvcPath=%2Fview.jsp&_CommitteePublications_INSTANCE_cPKH07n2IwWY_navigation=home&_CommitteePublications_INSTANCE_cPKH07n2IwWY_displayStyle=icon","label":"Cards"},{"icon":"list","active":false,"href":"https:\/\/www.bipm.org\/en\/committees\/cc\/ccl?p_p_id=CommitteePublications_INSTANCE_cPKH07n2IwWY&p_p_lifecycle=0&p_p_state=normal&p_p_mode=view&_CommitteePublications_INSTANCE_cPKH07n2IwWY_mvcPath=%2Fview.jsp&_CommitteePublications_INSTANCE_cPKH07n2IwWY_navigation=home&_CommitteePublications_INSTANCE_cPKH07n2IwWY_displayStyle=descriptive","label":"List"}],"selectAllURL":null,"cssClass":null,"searchContainerId":"_CommitteePublications_INSTANCE_cPKH07n2IwWY_entries","showSearch":false,"portletId":"CommitteePublications_INSTANCE_cPKH07n2IwWY","disabled":false,"creationMenu":null,"id":null,"portletNamespace":"_CommitteePublications_INSTANCE_cPKH07n2IwWY_","showResultsBar":false,"sortingOrder":"asc","sortingURL":"https:\/\/www.bipm.org\/en\/committees\/cc\/ccl?p_p_id=CommitteePublications_INSTANCE_cPKH07n2IwWY&p_p_lifecycle=0&p_p_state=normal&p_p_mode=view&_CommitteePublications_INSTANCE_cPKH07n2IwWY_mvcPath=%2Fview.jsp&_CommitteePublications_INSTANCE_cPKH07n2IwWY_sorting=desc","initialSelectedItems":0,"searchInputName":"_CommitteePublications_INSTANCE_cPKH07n2IwWY_keywords","clearSelectionURL":null,"initialActionDropdownItems":null,"itemsTotal":0,"searchFormName":null,"showCreationMenu":false,"orderDropdownItems":null,"searchValue":null}, 'sltr'); } }); } catch (err) { console.error(err); } }); </script> <script src="https://www.bipm.org/o/bipm-theme/js/main.js?browserId=ie&minifierType=js&languageId=en_US&t=1732534532000" type="text/javascript"></script> <script type="text/javascript">function handleBeforeNavigate(){Liferay.on("beforeNavigate",(()=>{const e=parent.document.getElementsByClassName("lfr-device")[0],a=document.createElement("section");a.classList.add("loading-animation-simulation-device"),a.innerHTML='<span aria-hidden="true" class="loading-animation"></span>',e.parentNode.appendChild(a),e.classList.add("lfr-device--is-navigating")}))}function handleFrameOnLoad(){frameElement.onload=function(){const e=parent.document.getElementsByClassName("loading-animation-simulation-device")[0];e&&e.remove();parent.document.getElementsByClassName("lfr-device")[0].classList.remove("lfr-device--is-navigating")}}function handlePreviewParam(){const e=new URL(frameElement.contentWindow.location.href),a=new URLSearchParams(e.search);a.has("p_l_mode")||(a.append("p_l_mode","preview"),frameElement.contentWindow.location.search=a.toString())}AUI().use("aui-base",(()=>{frameElement&&"simulationDeviceIframe"===frameElement.getAttribute("id")&&(document.body.classList.add("lfr-has-simulation-panel"),handleBeforeNavigate(),handleFrameOnLoad(),handlePreviewParam())})); </script><script> Liferay.Loader.require( 'frontend-js-collapse-support-web@2.0.13/index', function(CollapseProvider) { try { (function() { CollapseProvider.default() })(); } catch (err) { console.error(err); } }); </script><script> Liferay.Loader.require( 'frontend-js-tabs-support-web@2.0.12/index', function(TabsProvider) { try { (function() { TabsProvider.default() })(); } catch (err) { console.error(err); } }); </script><script> Liferay.Loader.require( 'frontend-js-dropdown-support-web@2.0.10/index', function(DropdownProvider) { try { (function() { DropdownProvider.default() })(); } catch (err) { console.error(err); } }); </script><script> Liferay.Loader.require( 'frontend-js-alert-support-web@2.0.10/index', function(AlertProvider) { try { (function() { AlertProvider.default() })(); } catch (err) { console.error(err); } }); </script><script> Liferay.Loader.require( 'frontend-js-tooltip-support-web@4.0.19/index', function(TooltipSupport) { try { (function() { TooltipSupport.default() })(); } catch (err) { console.error(err); } }); </script><script type="text/javascript"> Liferay.CustomDialogs = {enabled: false}; </script><script> </script> <div class="cookie-agreement hide"> <p>We use cookies to optimize our website. <a href="https://www.bipm.org/web/guest/privacy-policy" class="policy-button button-secondary button-secondary--no-arrow">View privacy policy</a></p> <div> <button class="agree-button button-primary">Accept</button> </div> </div> </body> </html>

CINXE.COM

CCL - BIPM