High Accuracy Gas Standards for Ambient Atmospheric Monitoring
Standard gas mixtures are an accurate and cost-effective method for calibrating ambient atmospheric monitors. They are stable and provide a repeatable reference concentration that can be used for high precision calibrations.
Each standard contains one or more accurately-weighed component in a matrix of whole or synthetic air.
Mixtures are available at ambient atmospheric concentrations and at ranges to meet customers' requirements:
|
Gaseous Species |
Amount Fraction |
| Methane | 1.8×10-6 |
| Nitrous oxide | 300×10-9 |
| Carbon dioxide | 380 ×10-6 |
| Carbon monoxide | 100×10-9 |
NPL's gas standards are certified for a period up to three years depending on the stability of the mixture. NPL offers a cost-effective re-certification service after the initial certification period has expired, ensuring temporal consistency of gas traceability.
Contact
Customer Service tel: +44 20 8943 8637
E-mail: gases_enquiries@npl.co.uk