Bilateral comparison of analytical capabilities for nitrogen dioxide (NO2) gas mixtures

Project Description

In the last CMCs review (cycle XXV) LNE had to review its CMCs for NO2 in the range between 10 and 1000 nmol/mol. As there is no comparison available to support the evidence, we proposed to organise a bilateral comparison between LNE/METAS; this proposal was accepted during the last SC Gas Analysis meeting.

This bilateral comparison will consist in analysing a NO2 gas mixture in a cylinder at 200 nmol/mol in air from Air Liquide: this gas mixture will be analysed by LNE, then by METAS and again by LNE, and finally we will determine the degree of equivalence.