NPL specialises in producing an extensive range of gas calibration standards through a chain of direct comparisons to the national measurement standards. This ensures amount fractions of guaranteed uncertainty and measurement traceability at national and international levels.

The current range of standards provides ultimate references for highly accurate measurements of ambient air quality, natural gas, industrial emissions, vehicle and aircraft emissions, odour measurement and occupational exposure.

Contact

Customer Service tel: +44 20 8943 8637
E-mail: gases_enquiries@npl.co.uk