Gas Standards for Noble Gases
Noble gas mixtures are stable and provide a repeatable reference concentration that can be used for regular calibrations.
Each noble gas standard contains accurately-weighed components.
Noble gas mixtures are available with the following components:
|
Noble Gas Standards |
||
|
Gaseous Species |
Matrix |
Amount Fraction Range (mol/mol) |
| Argon / Neon / Krypton / Helium | Oxygen | 500×10-6 – 500×10-9 |
| Argon / Neon / Krypton | Nitrogen / Air | 500×10-6 – 500×10-9 |
NPL's gas standards are certified for a period up to five 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
Last Updated: 11 Jan 2011
Created: 11 Jan 2011