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At the 14th CGPM in 1971 the list of base units of the SI was completed by adding the mole as base unit for amount of substance, following requests to the CIPM from the International Union of Pure and Applied Chemistry (IUPAC), the International Union of Pure an Applied Physics (IUPAP) and the International Organization for Standardization (ISO).
In recent years awareness of the importance of metrology in chemistry has grown as the world's economy becomes ever more global. International trade, human health and safety, and environmental protection measures – often enforced through legislation as well as regulations and standardization – require clear comparability and international traceability with respect to the results of chemical measurements and chemical analyses.
The BIPM Chemistry Section was established in 2000, following a decision of the CIPM. The chemistry section's programmes are currently focused on:
- Gas metrology – with facilities for the coordination of comparisons of ozone, nitrogen monoxide and nitrogen dioxide gas standards;
- Organic analysis – with facilities for the purity determination of organic pure substances and the coordination of primary calibrator purity assessment comparisons for therapeutic monitored drugs and steroid hormones.
The sections' progammes are allied to the work of the CCQM Working Group on Gas Analysis (GAWG) and the CCQM Working Group on Organic Analysis (OAWG), and the CCQM comparisons of national chemical measurement capabilities and standards.
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Summary
