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The first key comparison of primary standard gas mixtures

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This paper reports the results of the first key comparison of primary standard gas mixtures (PSMs), held under the auspices of the Consultative Committee for Amount of Substance (CCQM). PSMs are (national) measurement standards for the realization of specific gas mixture compositions. This key comparison, registered at the Bureau International des Poids et Mesures (BIPM) as CCQM-K1.a-g, encompasses thirteen different gas mixture compositions. In total, 125 transfer standards were prepared and distributed among ten participating institutes. The results show that joint activities in the development and maintenance of PSMs lead to a relative agreement within 10-2 of the reference values for the results of the international comparison.


PACS

82.80.Bg Chromatography

06.20.F- Units and standards

82.80.Ms Mass spectrometry (including SIMS, multiphoton ionization and resonance ionization mass spectrometry, MALDI)

Subjects

Instrumentation and measurement

Chemical physics and physical chemistry

Dates

Issue 1 (February 2000)



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