Bilateral comparison of standards of CO (in N2), NO (in N2), NO2 (in air) and SO2 (in air) at ambient levels.

Project Description

A bilateral comparison will be organised between LNE and NPL.

SpeciesStandard prepared byTarget date for
distribution
250 nmol/mol
SO2/air
Certification of commercial
standard (NPL)
Jan 2008
200 nmol/mol
NO2/air
Certification of commercial
standard (LNE)
April 2009
10 µmol/mol
CO/N2
Gravimetric standard (NPL)April 2009
200 nmol/mol
NO/N2
Certification of commercial
standard (LNE)
April 2009

Final Report 2013-07-05.

The project has been completed and the report can be downloaded here>>

Subjects
Metrology in Chemistry (MC)
Coordinator
Martin Milton, NPL (United Kingdom)
Coordinating Institute
NPL (United Kingdom)
Participating Partners
LNE (France)