Primary Standard | Certified Gas Standard

<!DOCTYPE html> <html class="no-js" lang="en"> <head> <title>Primary Standard | Certified Gas Standard | MESA Specialty Gas</title> <link rel="dns-prefetch preconnect" href="https://cdn11.bigcommerce.com/s-v47atl5r3u" crossorigin> <meta name="keywords" content="Primary, Certified Specialty Gas, Gravimetric Specialty Gas, Compressed Gas Specifications,calibration gas, specialty gases, calibration gases, gas regulators, mesa gas, specialty gas, calibration gas, specialty gas manufacturer, supplier, regulators, calibration gases, gas cylinder specifications, specialty gas company, gas cylinder, gas equipment, compressed gas, epa protocol, mesa specialty gases, gas cylinder capacity, gas standards, gas cylinder weight, gas regulator, mesa gases, co2 calibration gas, gas cylinder sizes, epa protocol gases, gas chromatography, calibration gas standards, specialty gas regulators, mesa equipment, instrument grade propane, cylinder specifications, gas cylinder capacities, carbon monoxide calibration, specialty analysis, thermal, elemental analysis, laboratory standards, laboratory analysis, instrument grade, sample preparation, environmental monitoring, helium, argon, air, hydrogen, chromatography, industrial gas"><meta name="description" content="Refillable cylinders require specialty gas product specifications to ensure proper application. 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</li> <li class="navPages-item navPage-subMenu-item"> <a href="/quotation-request/" class="navPages-action navPage-subMenu-action">Quotation Form</a> </li> <li class="navPages-item navPage-subMenu-item"> <a href="/corporate-contact/" class="navPages-action navPage-subMenu-action">Corporate Contact</a> </li> </ul> </div> </li> </ul> </nav> </div> </div> </div> <div class="page-overlay"></div> </header> <div data-content-region="header_bottom"></div> <div id="MainContent" class="body focus-hidden" data-currency-code="USD" role="main" tabindex="-1"> <div class="wrapper"> <main class="page"> <div class="grid"> <div class="grid__item medium-up--three-quarters"> <div class="page-content rte"> <h1>Specialty Gas Products Specifications | Certified Gas</h1> <div class="mesa"> <p>Here at MESA Specialty Gases, we make it our goal to provide our customers with everything they need for their calibration gases. That’s why we offer three types of specialty gas product specifications available for your calibration gas standard: Primary, Certified, and Gravimetric Standards.</p> <p>The Primary Standard is the most accurate and is made by NIST traceable weights. Unless stated otherwise, the specialty gas mixture is certified to ± 1% analytical accuracy of the numbers reported. That’s what makes this standard the best MESA certification we offer.</p> <p>The Certified Standard is made by a combination of pressure and/or weight measurements. Unless stated otherwise, the calibration gas mixture is certified to ± 2% analytical accuracy of the numbers reported.</p> <p>In the case of all specialty gas product specifications, final calibration gas mixtures are analyzed by gas chromatography or other suitable analytical methodology to confirm they are within the allowed tolerances. All calibration gas mixtures are supplied with a "Certificate of Analysis" that details the requested and analytical values as well as preparative and analytical methods used by MESA Specialty Gases to prepare the calibration gas standard.</p> <p>Regardless of your gas standard needs, MESA Specialty Gas is here to help. You can fill out the form on our contact page if you’d like more information on the services we can provide for your company when it comes to its required gas standards.</p> </div> <div class="mesa"> <table class="table table-striped table-bordered"> <thead> <tr style="background-color: #e0e0e0;"> <td colspan="4"><strong>STANDARD SPECIFICATIONS FOR CALIBRATION GAS, SPECIALTY GAS, NATURAL GAS, PETROCHEMICAL AND REFINERY GAS STANDARDS</strong></td> </tr> <tr><th scope="col"><strong>Product Grade</strong></th><th scope="col"><strong>Blend Tolerance</strong></th><th scope="col"><strong>Blend Tolerance (1)</strong></th><th scope="col"><strong>Certification Accuracy (1)</strong></th></tr> </thead> <tbody> <tr> <td scope="row"><strong>Primary</strong></td> <td><strong>Below 5 ppm (2)</strong></td> <td><strong>±10 to 15%</strong></td> <td><strong>±1 to 2%</strong></td> </tr> <tr> <td rowspan="3"> </td> <td><strong>5-100 ppm</strong></td> <td><strong>±5%</strong></td> <td><strong>±1%</strong></td> </tr> <tr> <td><strong>101-5000 ppm</strong></td> <td><strong>±5%</strong></td> <td><strong>±1%</strong></td> </tr> <tr> <td><strong>Above 0.5%</strong></td> <td><strong>±2%</strong></td> <td><strong>±1%</strong></td> </tr> <tr> <td scope="row"><strong>Certified</strong></td> <td><strong>Below 5 ppm (2)</strong></td> <td><strong>±15-20%</strong></td> <td><strong>±2-5%</strong></td> </tr> <tr> <td rowspan="3"> </td> <td><strong>5-100 ppm</strong></td> <td><strong>±10%</strong></td> <td><strong>±2%</strong></td> </tr> <tr> <td><strong>101-5000 ppm</strong></td> <td><strong>±10%</strong></td> <td><strong>±2%</strong></td> </tr> <tr> <td><strong>Above 0.5%</strong></td> <td><strong>±5%</strong></td> <td><strong>±2%</strong></td> </tr> <tr> <td scope="row"><strong>Gravimetric (3)</strong></td> <td><strong>0-100 ppm</strong></td> <td><strong>±20%</strong></td> <td rowspan="3"><strong>Non-Certified by independent laboratory analysis. Concentration Ranges are reported based on the gravimetric values.</strong></td> </tr> <tr> <td rowspan="2"> </td> <td><strong>101-5000 ppm</strong></td> <td><strong>±10%</strong></td> </tr> <tr> <td><strong>Above 0.5%</strong></td> <td><strong>±5%</strong></td> </tr> </tbody> </table> </div> <div class="mesa"> <p></p> <p> </p> <ol class="mesa-ol"> <li> <p>The Blend Tolerance is expressed as the relative percentage deviation from the requested concentration of the individual components. Blend Tolerances of multi-component mixtures might vary as a function of the requested individual component concentrations and complexity of the mixture. Certification Accuracy is shown as a percentage of the reported value.</p> <p>The Certification Accuracy of a Primary Standard is as follows:</p>           ±1% relative for concentrations ≤2.00%<br /><br />          ±0.02% absolute for concentrations >2.00% for standards with ≤15 components <br />          <span style="color: #1f497d;">(</span>excluding the reported value of the balance gas or liquid<span style="color: #1f497d;">)</span><br /><br />          ±1% relative for concentrations >2.00% for standards with >15 components<br /><br /></li> <li>Tolerance of minor components below 5 ppm may vary depending on the component and complexity of the mixture.<br /><br /></li> <li>Each component is reported at the requested concentration ± the % stated for the concentration range.</li> </ol></div> </div> </div> <div class="grid__item medium-up--one-quarter"> <div class="sidebar-section"> <div class="sidebar-block"> <div class="sidebar-title"> <h4>Quality</h4> </div> <p>It is the guiding principle of MESA Specialty Gas and equipment to offer only the highest quality calibration gas products to our customers.</p> </div> <div class="sidebar-block"> <div class="sidebar-title"> <h4>Service</h4> </div> <p>We recognize that only excellent customer service will allow our growth in this highly competitive calibration gas industry.</p> </div> <div class="sidebar-block"> <div class="sidebar-title"> <h4>Support</h4> </div> <p>MESA Specialty Gas offers technical support through top experts in the field. 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