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Gas reference materials

Providing ultimate references for highly accurate measurements

NPL has an experienced team of scientists working in extensive facilities, providing a unique capability in gas analysis. We supply an extensive range of gas calibration mixtures through a chain of direct comparisons to our national standards. These are used to underpin highly-accurate measurements of ambient air quality, natural gas, industrial emissions, vehicle and aircraft emissions and occupational exposure.

As the UK's National Metrology Institute (NMI), NPL provides traceability for gas-related measurement to internationally-recognised standards. We work in collaboration with NMIs around the world to ensure that these measurements are comparable, wherever and whenever they are made.

See NPL’s Calibration and Measurement Capabilities in the BIPM Key Comparison Database.

NPL has signed a Memorandum of Cooperation with the Chemical Sciences Division at NIST. For a selection of components, NPL can offer gas reference materials and calibration services to organisations that require NIST traceability.

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Products and services

Our range of standards provides ultimate references for highly accurate measurements of ambient air quality, gases, emissions and odours.

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Energy gases
Environmental gases
Industrial and emissions gases
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Still struggling to work out what you need? We pride ourselves on giving sound technical advice to guide you. By combining expert advice, standard tests and bespoke consultancy, you can be confident in our approach.

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Case study

Improving understanding of low-cost air quality sensors



ROCOF measurements in smart grids



Find out more about our expertise in this area, and how we are creating impact from science and engineering.

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Our research and measurement solutions support innovation and product development. We work with companies to deliver business advantage and commercial success.
Contact our Customer Services team on +44 20 8943 7070