NPL offers a certification service to speciality gas producers and end users, which ensures their gas mixtures are traceable to international standards.

NPL's Calibrated Gas Mixtures (CGMs) are mixture supplied by reputable gas companies which are individually certified against NPL's own Primary Standards. This service provides speciality gas producers and end users with increased confidence in the accuracy of commercially supplied gas mixtures.

NPL specialises in certifying a wide range of gas species and amount fractions with guaranteed uncertainties to meet specific customers requirements.

Contact

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