High Purity Gas Analysis
Trace Gas Analysis Facility
The NPL Trace Gas Analysis Facility is capable of providing traceable measurements of the key contaminant species found in high-purity gases.
An overview of the instruments that make up the facility and their capabilities can be found in the table below:
| Trace contaminant | Instrument | Matrix gases | Detection limit (nmol/mol) |
| Water | Tiger Optics Lasertrace | Most inerts, passive gases and some toxic and corrosive gases | Sub-nmol/mol |
| Oxygen | Delta-F Nanotrace II | All inerts, H2, light HCs and halocarbons | Sub-nmol/mol |
| Carbon dioxide | Peak Performer 1 (FID + methaniser) | N2, Ar, He, O2, H2 and air | 1-2 |
| Methane | 1-2 | ||
| Non-methane hydrocarbons | 3-5 | ||
| Hydrogen | Ametek Ta5000R | N2, Ar, He, O2, propylene, ethylene and air | 1-2 |
| Carbon monoxide | 1-2 | ||
| Sulphur dioxide, nitrogen monoxide | UV analysers | N2 and air | 1 |
| Volatile organic components (VOCs) | Cryo-focus GC | N2 and air | 100 pmol/mol |
| Carbon monoxide, carbon dioxide, ethane, argon, oxygen, nitrogen, methane and hydrogen | GC-DID | N2, CH4, Ar, O2, He and air | 10 |
Measurement traceability is achieved through instrument calibrations using NPL Primary Reference Gas Mixtures. The NPL trace gas analysis facility is also available for instrument calibration and performance assessment work.
Contact
Customer Service tel: +44 20 8943 8637
E-mail: gases_enquiries@npl.co.uk
Last Updated: 5 May 2011
Created: 9 Jan 2009