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International comparison CCQM-K54: Primary standard gas mixtures of hexane in methane
The aim of this comparison is to evaluate the gravimetry and purity verification of gas mixtures prepared by introducing a liquid into a gas cylinder. This type of preparation is well known from,Expand
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KEY COMPARISON: International comparison CCQM K23b: Natural gas type II
At the highest metrological level, natural gas standards are commonly prepared gravimetrically as PSMs (Primary Standard Mixtures). This international key comparison is a repeat of CCQM-K1e-g. TheExpand
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