This document describes the result of a key comparison for propane in nitrogen. The nominal amount-of-substance fraction of propane is 1000 μmol/mol. The comparison aimed to assess the measurement capability of participants in gas analysis. Nine NMIs or DIs participated in the comparison.
CERI participated in a key comparison CCQM-K111—propane in nitrogen, and coordinated this key comparison. Therefore, every participants' results of this comparison are linking to the CCQM-K111.
Gravimetric values of the samples were used as key comparison reference values (KCRVs).
Measured values of eight participants were within ± 0.25 % of the KCRVs.
Many participants reported purity or impurity analysis of materials. These results are also able to assess the participants' capability of the analysis.
License type:
Funding Info:
Chemical Metrology Programme under MTI ( 2012 - 2021)
Description:
This is an author-created, un-copyedited version of an article accepted for publication/published
in Metrologia. IOP Publishing Ltd is not responsible for any errors or omissions in this version of the manuscript or any version derived from it. The Version of Record is available online at https://doi.org/10.1088/0026-1394/55/1A/08008