Whether you require a process mixture to play a physical or chemical role in a production process, a high accuracy calibration gas mixture for an analytical application, or a Certified Reference Material (CRM) to comply with legislation, you can be sure that Air Products has the capability and expertise to meet your needs.
Our Experis® range of gas mixtures comprehensively cover the needs of the traditional laboratory market, the fast growing environmental market, and the diverse requirements of all kinds of industries: petrochemical, chemical and pharmaceutical, automotive, natural gas, detection and safety…Each market is served by our locally held stocks of the most frequently used mixtures, supported by our vast ability to "manufacture-to-order" quickly and cost effectively.
Experis® gases are designed to ensure the highest levels accuracy, purity, stability and peace of mind.
Highly accurate mixtures
All our mixtures are filled using the most accurate and cost effective methods available. Most of our mixtures are produced by gravimetric filling, where the components are added sequentially using traceable weights. Gravimetric filling uses ultra-high precision balances to weigh each component into the cylinder with production crosschecks at each step in the sequence. Each balance is regularly calibrated using traceable weights that are calibrated in turn every six months by an external body. This ensures that the expected tolerance requirements are always fulfilled.
Highly stable mixtures
Low concentration mixtures of reactive gases may show changes in concentration both over time and as the cylinder pressure falls. Since their stability is essential to the reliability of analytical results, we put our cylinders through special treatments and use proprietary technology to produce the Experis® range of gas mixtures. These mixtures are ultra-stable, even in the ppb range. Results have been verified and confirmed by independent National Laboratories.
State-of-the-Art Mixture Filling
All our mixtures are filled using the most accurate and cost-effective technology. For most applications our filling systems use gravimetric filling (component addition by weight) on high precision weighing scales. This precise instrumentation and our technical expertise ensure that the rigorous tolerance requirements are always fulfilled.
Mixtures Traceability
All our calibration mixtures are delivered with a calibration certificate fully compliant to ISO 6141 requirements. Due to our thorough approach to quality, we are able to trace every mixture back to its original filling data. This data includes cylinder numbers, actual components weights and chromatographic and spectroscopic analysis results. Furthermore, the weigh scales are calibrated against traceable weights on a regular basis.
Select the optimum mixture
| To help you select the optimum mixture for your application, Air Products has experts ready to advise you. Contact us for more information, or order the knowledge paper: "Give Value to your Analytical Data: Calibration Gas Mixtures", jointly written by the National Metrological Institute and Air Products. |
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 For more information or to request our brochures, please use our Specialty Gases feedback form to contact us.
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