Comparison of NO in N2 (600 to 850 10-9 mol/mol) expressed in amount fraction units

Project Description

As a follow up of key-comparison CCQM-26a JRC and NPL will carry out a bilateral comparison on NO in N2 measurement at ambient concentrations.
The project will compare the JRC value, calibrated by the static dilution technique, to the gravimetric reference value of NPL.

July 08               Circulation of cylinder
September 08    Compilation of measurements by JRC
December 08     Completion of draft report
January 09         Completion and agreement of final report
February 09       Agreement by EURAMET reviewers, as required

Metrology in Chemistry (MC)
Annette Borowiak, JRC (Italy)
Participating Partners
NPL (United Kingdom)