Obtaining Access to the NCNR Facility

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Your Experiment</a> <button class="usa-accordion__button" aria-expanded="false" aria-controls="menu-nist-center-for-neutron-res-4"><span class="usa-sr-only">Expand or Collapse</span></button> <ul id="menu-nist-center-for-neutron-res-4" class="usa-sidenav__sublist usa-accordion"> <li class="usa-sidenav__item"> <a href="/web/20230130021345/https://www.nist.gov/ncnr/planning-your-experiment/shipping-samples-ncnr" data-drupal-link-system-path="">Shipping samples to NCNR</a> </li> <li class="usa-sidenav__item"> <a href="/web/20230130021345/https://www.nist.gov/ncnr/planning-your-experiment/scattering-length-periodic-table" data-drupal-link-system-path="">Scattering Length Periodic Table</a> </li> <li class="usa-sidenav__item"> <a href="https://web.archive.org/web/20230130021345/http://www.ncnr.nist.gov/resources/activation/" data-drupal-link-system-path="">Activation and SLD Calculator</a> </li> </ul> </li> <li class="usa-sidenav__item"> <a href="https://web.archive.org/web/20230130021345/https://www.ncnr.nist.gov/ipeek" data-drupal-link-system-path="">Live Data</a> </li> <li class="usa-sidenav__item usa-sidenav__item--parent"> <a href="/web/20230130021345/https://www.nist.gov/ncnr/about-ncnr" data-drupal-link-system-path="">About NCNR</a> <button class="usa-accordion__button" aria-expanded="false" aria-controls="menu-nist-center-for-neutron-res-6"><span class="usa-sr-only">Expand or Collapse</span></button> <ul id="menu-nist-center-for-neutron-res-6" class="usa-sidenav__sublist usa-accordion"> <li class="usa-sidenav__item"> <a href="https://web.archive.org/web/20230130021345/https://www.nist.gov/publications/nist-center-neutron-research-over-40-years-serving-nistnbs-and-nation" data-drupal-link-system-path="">Informal History</a> </li> <li class="usa-sidenav__item"> <a href="/web/20230130021345/https://www.nist.gov/ncnr/about-ncnr/employmentresearch-opportunities" data-drupal-link-system-path="">Employment/Research Opportunities</a> </li> <li class="usa-sidenav__item"> <a href="/web/20230130021345/https://www.nist.gov/ncnr/about-ncnr/ncnr-annual-reports" data-drupal-link-system-path="">NCNR Annual Reports</a> </li> <li class="usa-sidenav__item"> <a href="https://web.archive.org/web/20230130021345/https://www.nist.gov/system/files/documents/2019/09/24/ncnr_dmp_v04.pdf" data-drupal-link-system-path="">Data Management Plan</a> </li> </ul> </li> <li class="usa-sidenav__item usa-sidenav__item--parent"> <a href="/web/20230130021345/https://www.nist.gov/ncnr/neutron-instruments" data-drupal-link-system-path="">Neutron Instruments</a> <button class="usa-accordion__button" aria-expanded="false" aria-controls="menu-nist-center-for-neutron-res-7"><span class="usa-sr-only">Expand or Collapse</span></button> <ul id="menu-nist-center-for-neutron-res-7" class="usa-sidenav__sublist usa-accordion"> <li class="usa-sidenav__item"> <a href="/web/20230130021345/https://www.nist.gov/ncnr/neutron-instruments/general-info-and-layout" data-drupal-link-system-path="">General Info and Layout</a> </li> <li class="usa-sidenav__item"> <a href="/web/20230130021345/https://www.nist.gov/ncnr/neutron-instruments/instrument-contacts" data-drupal-link-system-path="">Instrument contacts</a> </li> <li class="usa-sidenav__item"> <a href="https://web.archive.org/web/20230130021345/http://physics.nist.gov/MajResFac/NIF/" data-drupal-link-system-path="">Neutron imaging</a> <button class="usa-accordion__button" aria-expanded="false" aria-controls="menu-nist-center-for-neutron-res-7-3"><span class="usa-sr-only">Expand or Collapse</span></button> <ul id="menu-nist-center-for-neutron-res-7-3" class="usa-sidenav__sublist usa-accordion"> <li class="usa-sidenav__item"> <a href="https://web.archive.org/web/20230130021345/http://physics.nist.gov/MajResFac/NIF/" data-drupal-link-system-path="">BT2 Neutron Imaging Facility (NIF)</a> </li> <li class="usa-sidenav__item"> <a href="/web/20230130021345/https://www.nist.gov/laboratories/tools-instruments/cold-neutron-imaging-instrument" data-drupal-link-system-path="">NG6 Cold Neutron Imaging Facility</a> </li> </ul> </li> <li class="usa-sidenav__item"> <a href="https://web.archive.org/web/20230130021345/https://www.ncnr.nist.gov/instruments/bt1/" data-drupal-link-system-path="">Crystallography</a> <button class="usa-accordion__button" aria-expanded="false" aria-controls="menu-nist-center-for-neutron-res-7-4"><span class="usa-sr-only">Expand or Collapse</span></button> <ul id="menu-nist-center-for-neutron-res-7-4" class="usa-sidenav__sublist usa-accordion"> <li class="usa-sidenav__item"> <a href="/web/20230130021345/https://www.nist.gov/ncnr/high-resolution-powder-diffractometer-bt-1" data-drupal-link-system-path="">BT1 High Resolution Powder Diffractometer</a> </li> <li class="usa-sidenav__item"> <a href="/web/20230130021345/https://www.nist.gov/ncnr/residual-stress-diffractometer" data-drupal-link-system-path="">BT8 Residual Stress Diffractometer</a> </li> </ul> </li> <li class="usa-sidenav__item"> <a href="/web/20230130021345/https://www.nist.gov/ncnr/neutron-instruments/reflectometry" data-drupal-link-system-path="">Reflectometry</a> <button class="usa-accordion__button" aria-expanded="false" aria-controls="menu-nist-center-for-neutron-res-7-5"><span class="usa-sr-only">Expand or Collapse</span></button> <ul id="menu-nist-center-for-neutron-res-7-5" class="usa-sidenav__sublist usa-accordion"> <li class="usa-sidenav__item"> <a href="https://web.archive.org/web/20230130021345/https://www.nist.gov/ncnr/chrns-candor-white-beam-reflectometer" data-drupal-link-system-path="">CANDOR White Beam Reflectometer [CHRNS]</a> </li> <li class="usa-sidenav__item"> <a href="/web/20230130021345/https://www.nist.gov/ncnr/magik-reflectometer" data-drupal-link-system-path="">MAGIK Offspecular Reflectometer</a> </li> <li class="usa-sidenav__item"> <a href="/web/20230130021345/https://www.nist.gov/ncnr/ng7-horizontal-neutron-reflectometer" data-drupal-link-system-path="">NG7 Cold Neutron Reflectometer- Horizontal Sample Geometry</a> </li> <li class="usa-sidenav__item"> <a href="/web/20230130021345/https://www.nist.gov/ncnr/polarized-beam-reflectometer-pbr" data-drupal-link-system-path="">Polarized Beam Reflectometer/Diffractometer (PBR)</a> </li> </ul> </li> <li class="usa-sidenav__item"> <a href="/web/20230130021345/https://www.nist.gov/ncnr/neutron-instruments/small-angle-neutron-scattering-sans" data-drupal-link-system-path="">Small Angle Neutron Scattering (SANS)</a> <button class="usa-accordion__button" aria-expanded="false" aria-controls="menu-nist-center-for-neutron-res-7-6"><span class="usa-sr-only">Expand or Collapse</span></button> <ul id="menu-nist-center-for-neutron-res-7-6" class="usa-sidenav__sublist usa-accordion"> <li class="usa-sidenav__item"> <a href="https://web.archive.org/web/20230130021345/https://www.nist.gov/ncnr/chrns-usans-ultra-small-angle-neutron-scattering" data-drupal-link-system-path="">BT5 Perfect Crystal SANS (USANS)</a> </li> <li class="usa-sidenav__item"> <a href="https://web.archive.org/web/20230130021345/https://www.nist.gov/ncnr/chrns-vsans-very-small-angle-neutron-scattering" data-drupal-link-system-path="">NG3 Very Small Angle Scattering Instrument [CHRNS]</a> </li> <li class="usa-sidenav__item"> <a href="https://web.archive.org/web/20230130021345/https://www.nist.gov/ncnr/ng7-sans-small-angle-neutron-scattering" data-drupal-link-system-path="">NG7 30m Small Angle Scattering Instrument</a> </li> <li class="usa-sidenav__item"> <a href="https://web.archive.org/web/20230130021345/http://www.nist.gov/ncnr/10m-sans-small-angle-neutron-scattering" data-drupal-link-system-path="">NGB 10 m Small Angle Scattering Instrument [nSOFT]</a> </li> <li class="usa-sidenav__item"> <a href="https://web.archive.org/web/20230130021345/https://www.nist.gov/ncnr/chrns-30m-sans-small-angle-neutron-scattering" data-drupal-link-system-path="">NGB 30m Small Angle Scattering Instrument</a> </li> </ul> </li> <li class="usa-sidenav__item"> <a href="/web/20230130021345/https://www.nist.gov/ncnr/neutron-instruments/spectroscopy" data-drupal-link-system-path="">Spectroscopy</a> <button class="usa-accordion__button" aria-expanded="false" aria-controls="menu-nist-center-for-neutron-res-7-7"><span class="usa-sr-only">Expand or Collapse</span></button> <ul id="menu-nist-center-for-neutron-res-7-7" class="usa-sidenav__sublist usa-accordion"> <li class="usa-sidenav__item"> <a href="/web/20230130021345/https://www.nist.gov/ncnr/filter-analyzer-spectrometer-fans" data-drupal-link-system-path="">BT4 Filter Analyzer Neutron Spectrometer</a> </li> <li class="usa-sidenav__item"> <a href="/web/20230130021345/https://www.nist.gov/ncnr/bt-4-triple-axis-spectrometer" data-drupal-link-system-path="">BT4 Triple Axis Spectrometer</a> </li> <li class="usa-sidenav__item"> <a href="/web/20230130021345/https://www.nist.gov/ncnr/bt-7-double-focusing-triple-axis-spectrometer" data-drupal-link-system-path="">BT7 Triple Axis Spectrometer</a> </li> <li class="usa-sidenav__item"> <a href="/web/20230130021345/https://www.nist.gov/ncnr/chrns-macs-multi-axis-crystal-spectrometer" data-drupal-link-system-path="">BT9 Multi-Axis Crystal Spectrometer (MACS) [CHRNS]</a> </li> <li class="usa-sidenav__item"> <a href="https://web.archive.org/web/20230130021345/https://www.nist.gov/ncnr/high-flux-backscattering-spectrometer" data-drupal-link-system-path="">NG2 High-Flux Backscattering Spectrometer (HFBS) [CHRNS]</a> </li> <li class="usa-sidenav__item"> <a href="/web/20230130021345/https://www.nist.gov/ncnr/dcs-disk-chopper-spectrometer" data-drupal-link-system-path="">NG4 Disk-Chopper Time-of-Flight Spectrometer (DCS)</a> </li> <li class="usa-sidenav__item"> <a href="/web/20230130021345/https://www.nist.gov/ncnr/spin-polarized-inelastic-neutron-spectrometer-spins" data-drupal-link-system-path="">NG5 Spin-Polarized Triple-axis Spectrometer (SPINS)</a> </li> <li class="usa-sidenav__item"> <a href="/web/20230130021345/https://www.nist.gov/ncnr/chrns-nse-neutron-spin-echo-spectrometer" data-drupal-link-system-path="">NGA Neutron Spin Echo Spectrometer (NSE) [CHRNS]</a> </li> </ul> </li> <li class="usa-sidenav__item"> <a href="/web/20230130021345/https://www.nist.gov/pml/radiation-physics/neutron-physics" data-drupal-link-system-path="">Neutron physics</a> <button class="usa-accordion__button" aria-expanded="false" aria-controls="menu-nist-center-for-neutron-res-7-8"><span class="usa-sr-only">Expand or Collapse</span></button> <ul id="menu-nist-center-for-neutron-res-7-8" class="usa-sidenav__sublist usa-accordion"> <li class="usa-sidenav__item"> <a href="https://web.archive.org/web/20230130021345/http://www.nist.gov/pml/div682/grp03/index.cfm" data-drupal-link-system-path="">NG6M Neutron Physics</a> </li> <li class="usa-sidenav__item"> <a href="/web/20230130021345/https://www.nist.gov/laboratories/tools-instruments/neutron-interferometry-and-optics-facilities" data-drupal-link-system-path="">NG7 Neutron Interferometer (NIOF)</a> </li> <li class="usa-sidenav__item"> <a href="https://web.archive.org/web/20230130021345/http://www.nist.gov/pml/div682/grp03/index.cfm" data-drupal-link-system-path="">NGC Neutron Physics 0.5 nm</a> </li> </ul> </li> </ul> </li> <li class="usa-sidenav__item"> <a href="/web/20230130021345/https://www.nist.gov/ncnr/schedules" data-drupal-link-system-path="">Schedules</a> </li> <li class="usa-sidenav__item"> <a href="/web/20230130021345/https://www.nist.gov/ncnr/spin-filters" data-drupal-link-system-path="">Spin Filters</a> </li> <li class="usa-sidenav__item"> <a href="/web/20230130021345/https://www.nist.gov/ncnr/sample-environment" data-drupal-link-system-path="">Sample Environment</a> </li> <li class="usa-sidenav__item"> <a href="/web/20230130021345/https://www.nist.gov/ncnr/sample-prep-labs" data-drupal-link-system-path="">Sample Prep Labs</a> </li> <li class="usa-sidenav__item usa-sidenav__item--parent"> <a href="/web/20230130021345/https://www.nist.gov/ncnr/data-reduction-analysis" data-drupal-link-system-path="">Data Reduction & Analysis</a> <button class="usa-accordion__button" aria-expanded="false" aria-controls="menu-nist-center-for-neutron-res-12"><span class="usa-sr-only">Expand or Collapse</span></button> <ul id="menu-nist-center-for-neutron-res-12" class="usa-sidenav__sublist usa-accordion"> <li class="usa-sidenav__item"> <a href="/web/20230130021345/https://www.nist.gov/ncnr/data-reduction-analysis/reflectometry-software" data-drupal-link-system-path="">Reflectometry Software</a> </li> <li class="usa-sidenav__item"> <a href="/web/20230130021345/https://www.nist.gov/ncnr/data-reduction-analysis/sans-software" data-drupal-link-system-path="">SANS Software</a> </li> </ul> </li> <li class="usa-sidenav__item usa-sidenav__item--parent"> <a href="/web/20230130021345/https://www.nist.gov/ncnr/publishing-your-results" data-drupal-link-system-path="">Publishing Your Results</a> <button class="usa-accordion__button" aria-expanded="false" aria-controls="menu-nist-center-for-neutron-res-13"><span class="usa-sr-only">Expand or Collapse</span></button> <ul id="menu-nist-center-for-neutron-res-13" class="usa-sidenav__sublist usa-accordion"> <li class="usa-sidenav__item"> <a href="/web/20230130021345/https://www.nist.gov/ncnr/chrns/publications-and-acknowledgment" data-drupal-link-system-path="">Publishing CHRNS Results</a> </li> <li class="usa-sidenav__item"> <a href="/web/20230130021345/https://www.nist.gov/ncnr/publishing-your-results/werb" data-drupal-link-system-path="">WERB</a> </li> </ul> </li> <li class="usa-sidenav__item"> <a href="/web/20230130021345/https://www.nist.gov/ncnr/chrns/education-and-outreach" data-drupal-link-system-path="">CHRNS Education and Outreach</a> </li> <li class="usa-sidenav__item"> <a href="https://web.archive.org/web/20230130021345/https://nug.umd.edu/index.html" data-drupal-link-system-path="">NCNR User Group</a> </li> </ul> </nav> </span></div></div> </div> </div> </div>    </div> </aside> <div class="nist-page__region nist-page__region--content tablet-lg:grid-col-8 desktop-lg:grid-col-9"> <div class="nist-block"> <h1 class="nist-page__title">Obtaining Access to the NCNR Facility</h1> </div> <div class="nist-block">  <div data-elastic-exclude class="nist-block nist-social__wrapper"> <h2 class="nist-social__title">Share</h2> <div class="social-media-sharing"> <div class="nist-social__wrapper--share"> <div> <a target="_blank" rel="noopener" href="https://web.archive.org/web/20230130021345/https://www.facebook.com/share.php?u=https://www.nist.gov/ncnr/arrange-visit-ncnr/obtaining-access-ncnr" title="Facebook" class="nist-social nist-social--facebook-gray"> <span>Facebook</span> </a> </div> <div> <a target="_blank" rel="noopener" href="https://web.archive.org/web/20230130021345/https://www.linkedin.com/shareArticle?mini=true&url=https://www.nist.gov/ncnr/arrange-visit-ncnr/obtaining-access-ncnr&source=https://www.nist.gov/ncnr/arrange-visit-ncnr/obtaining-access-ncnr" title="Linkedin" class="nist-social nist-social--linkedin-gray"> <span>Linkedin</span> </a> </div> <div> <a target="_blank" rel="noopener" href="https://web.archive.org/web/20230130021345/https://twitter.com/intent/tweet?url=https://www.nist.gov/ncnr/arrange-visit-ncnr/obtaining-access-ncnr&status=https://www.nist.gov/ncnr/arrange-visit-ncnr/obtaining-access-ncnr" title="Twitter" class="nist-social nist-social--twitter-gray"> <span>Twitter</span> </a> </div> <div> <a href="https://web.archive.org/web/20230130021345/mailto:/?subject=NIST.gov&body=Check out this site https://www.nist.gov/ncnr/arrange-visit-ncnr/obtaining-access-ncnr" title="Email" class="nist-social nist-social--envelope-gray"> <span>Email</span> </a> </div> </div> </div> </div>  </div> <div class="nist-block"> <div class="text-with-summary"> <p class="text-align-left">The NCNR uses the web-based <a href="https://web.archive.org/web/20230130021345/https://www-s.nist.gov/NCNR-IMS/login.do">Information Management System (IMS)</a> to track interactions with its facility users.</p> <p><span><span><span>The following steps must be followed before a <strong>first time</strong> user can obtain unescorted access to the NIST site and unescorted access to the experimental areas of the NIST Center for Neutron Research (NCNR). </span></span></span></p> <p><span><span><span>If you have any questions, please contact the NCNR User Office (K07) at 301-975-8200 or email <span class="spamspan"><span class="u">ncnraccess</span> [at] <span class="d">nist.gov</span></span>.</span></span></span></p> <h3><span><span><span>Steps prior to coming:</span></span></span></h3> <p><span><span><span>Users who are Foreign Nationals must complete the NCNR Visitor Registration form (available in IMS) at least 35 calendar days prior to arrival.</span></span></span></p> <p><span><span><span>Users who are U.S. Citizens or U.S. Permanent Residents must complete the NCNR Visitor Registration form at least 3 full business days prior to arrival.</span></span></span></p> <ol><li> <p><span><span><span><a href="https://web.archive.org/web/20230130021345/https://www-s.nist.gov/NCNR-IMS/login.do">Create a new IMS account</a>.</span></span></span></p> </li> <li> <p><span><span><span>Activate your IMS account.</span></span></span></p> </li> <li> <p><span><span><span>Complete the NIST Visitor Registration located in your IMS Account under the User Activities tab.</span></span></span></p> </li> <li> <p><span><span><span>Request Health Physics Tour, located under the User Activities tab in your IMS Account.</span></span></span></p> </li> <li> <p><span><span><span>Complete the online portion of the radiation training, located under the User Activities tab in your IMS Account. (You may do this on-site but it could delay you if you haven’t allocated sufficient time).</span></span></span></p> </li> <li> <p><span><span><span>Prepare a <a href="https://web.archive.org/web/20230130021345/https://www.nist.gov/ncnr/example-trustworthy-letter">Trustworthy Letter</a>, written and signed by your supervisor or department head on official letterhead from your home institution. <strong>Original letter with a handwritten (i.e., “wet”) signature is required. An electronic signature cannot be accepted</strong><strong>.</strong> You cannot obtain a badge from the NCNR without this letter.</span></span></span></p> </li> </ol><h3><span><span><span>Bring with you:</span></span></span></h3> <ol><li> <p><span><span><span>U.S. Citizens: a driver’s license or passport.</span></span></span></p> </li> <li> <p><span><span><span>Foreign Nationals: Your passport and visa - Proof of Stay in the United States (for example: DS2019, I94, I20, work employment card, etc.). <strong>Note:</strong> a tourist visa is not acceptable. Please contact us if you have any questions at 301-975-8200 or email <span class="spamspan"><span class="u">ncnraccess</span> [at] <span class="d">nist.gov</span></span>.</span></span></span></p> </li> <li> <p><span><span><span>U.S. Permanent Resident: Your valid U.S. Permanent Resident card (green card). <strong>Must present Permanent Resident card.</strong></span></span></span></p> </li> <li> <p><span><span><span>A signed copy of your <a href="https://web.archive.org/web/20230130021345/https://www.nist.gov/ncnr/example-trustworthy-letter">Trustworthy Letter</a> as described above.</span></span></span></p> </li> <li> <p><span><span><span>If you are bringing a car on-site, a copy of your vehicle registration or rental agreement.</span></span></span></p> </li> </ol><h3><span><span><span>Steps after arriving:</span></span></span></h3> <ol><li> <p><span><span><span>Pick up a temporary visitor badge at the Visitor Center located at the main entrance of NIST.</span></span></span></p> </li> <li> <p><span><span><span>Arrive at the NCNR (Bldg. 235) and go to the main lobby. Acquire a temporary yellow visitor badge and dosimeter from the police officer at the desk. </span></span></span></p> </li> <li> <p><span><span><span>Go to the NCNR User Office (K07) in the basement of Bldg. 235 (Steps are on the right of the lobby). Sign a Facility User Agreement and acquire a temporary green facility user badge. You should now have three temporary badges, all of which must be worn visibly.</span></span></span></p> </li> <li> <p><span><span><span>If desired, return to NCNR lobby and page your instrument contact who will escort you into the building areas with restricted access.</span></span></span></p> </li> <li> <p><span><span><span>Meet in the NCNR lobby to complete the health physics tour, which begins in the main lobby at 9:30 AM on the date requested.</span></span></span></p> </li> <li> <p><span><span><span>After completion of the On-site Radiation Safety Training (which includes the tour and a lecture), have the associated form signed by health physics.</span></span></span></p> </li> <li> <p><span><span><span>Review instrument and laboratory safety requirements with your instrument contact.(i.e., Safety Checklist).</span></span></span></p> </li> <li> <p><span><span><span>Bring your ID, health physics paperwork, Trustworthy Letter, Safety Checklist, and green and white temporary badges to the User Office (K07) where you will receive your orange user badge. Important: If you are not a U.S. citizen please bring proof of stay in the United States and passport. <strong>A tourist visa (e.g. B2 or WT) is not acceptable.</strong> In some cases additional forms will need to be completed after you arrive.</span></span></span></p> </li> <li> <p><span><span><span>Return your yellow visitor badge and temporary dosimeter to the police officer in the lobby. Badge into the restricted area and pick up your assigned dosimeter from the hallway rack before beginning your experiment.</span></span></span></p> </li> </ol> </div> </div> <div class="nist-block">  <div data-elastic-exclude="" class="nist-tags"> <a href="/web/20230130021345/https://www.nist.gov/topic-terms/neutron-research" hreflang="en">Neutron research</a></div>  </div> </div> </div> </div> <div class="grid-container"> <div class="nist-page__region nist-page__region--content-bottom"> <div class="nist-block nist-block--contact"> <h2 class="nist-block__title">Contacts</h2> <div class="nist-contact"> <ul class="nist-contact__items"> <li role="article" about="/people/yamali-hernandez" class="nist-contact__item"> <div class="nist-contact__name"><a href="/web/20230130021345/https://www.nist.gov/people/yamali-hernandez" title="View staff profile page">Yamali Hernandez</a></div> <div> <a href="https://web.archive.org/web/20230130021345/mailto:yamali.hernandez@nist.gov">yamali.hernandez@nist.gov</a> </div> <div> (301) 975-5295 </div> </li> <li role="article" about="/people/mary-ann-m-fitzgerald" class="nist-contact__item"> <div class="nist-contact__name"><a href="/web/20230130021345/https://www.nist.gov/people/mary-ann-m-fitzgerald" title="View staff profile page">Mary Ann M FitzGerald</a></div> <div> <a href="https://web.archive.org/web/20230130021345/mailto:maryann.fitzgerald@nist.gov">maryann.fitzgerald@nist.gov</a> </div> <div> (301) 975-5666 </div> </li> </ul> </div> </div> <div class="nist-block"> <div class="text-italic font-sans-2xs"> Created May 12, 2017, Updated November 15, 2019 </div> </div> </div> </div> </section> </div> <div data-elastic-exclude>  <footer class="nist-footer padding-bottom-4"> <div class="grid-container nist-footer__info"> <div class="grid-row"> <div class="tablet:grid-col-6"> <div class="nist-footer__logo"> <a href="/web/20230130021345/https://www.nist.gov/" title="National Institute of Standards and Technology" rel="home"> <img class="nist-footer__logo-img" src="/web/20230130021345im_/https://www.nist.gov/libraries/nist-component-library/dist/img/logo/NIST-Logo-Brand-White.svg" alt="National Institute of Standards and Technology logo" width="300px" height="42px"/> </a> </div> <div class="nist-footer__contact"> <h3 class="nist-footer__contact-heading">HEADQUARTERS</h3> <address> 100 Bureau Drive<br> Gaithersburg, MD 20899<br> <a href="https://web.archive.org/web/20230130021345/tel:301-975-2000">301-975-2000</a> </address> <p> <a href="https://web.archive.org/web/20230130021345/mailto:do-webmaster@nist.gov">Webmaster</a> | <a href="https://web.archive.org/web/20230130021345/https://www.nist.gov/about-nist/contact-us">Contact Us</a> | <a href="https://web.archive.org/web/20230130021345/https://www.nist.gov/visit">Our Other Offices</a> </p> </div> </div> <div class="tablet:grid-col-6"> <div class="nist-footer__social-links"> <a class="nist-social nist-social--twitter-white" href="https://web.archive.org/web/20230130021345/https://twitter.com/NIST"> <span>Twitter</span> </a> <a class="nist-social nist-social--facebook-white" href="https://web.archive.org/web/20230130021345/https://www.facebook.com/NIST"> <span>Facebook</span> </a> <a class="nist-social nist-social--linkedin-white" href="https://web.archive.org/web/20230130021345/https://www.linkedin.com/company/nist"> <span>LinkedIn</span> </a> <a class="nist-social nist-social--instagram-white" href="https://web.archive.org/web/20230130021345/https://www.instagram.com/nist/"> <span>Instagram</span> </a> <a class="nist-social nist-social--youtube-white" href="https://web.archive.org/web/20230130021345/https://www.youtube.com/NIST"> <span>YouTube</span> </a> <a class="nist-social nist-social--giphy-white" href="https://web.archive.org/web/20230130021345/https://giphy.com/nist"> <span>Giphy</span> </a> <a class="nist-social nist-social--rss-white" href="https://web.archive.org/web/20230130021345/https://www.nist.gov/news-events/nist-rss-feeds"> <span>RSS Feed</span> </a> <a class="nist-social nist-social--envelope-white" href="https://web.archive.org/web/20230130021345/https://public.govdelivery.com/accounts/USNIST/subscriber/new"> <span>Mailing List</span> </a> </div> <div class="nist-footer__feedback"> How are we doing? 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