度量衡に関する総会

1999年10月のCGPM第21回会合で、BIPMにまだ加盟していない国と経済同盟のために「準加盟国」というカテゴリーが創設された。^{[ 17 ]}

The Blevin Report, published in 1998, examined the state of worldwide metrology.^[58] The report originated from a resolution passed at the 20th CGPM (October 1995) which committed the CIPM to

study and report on the long-term national and international needs relating to metrology, the appropriate international collaborations and the unique role of the BIPM to meet these needs, and the financial and other commitments that will be required from the Member States in the coming decades.

The report identified, amongst other things, a need for closer cooperation between the BIPM and other organizations such as International Organization of Legal Metrology (OIML) and International Laboratory Accreditation Cooperation (ILAC) with clearly defined boundaries and interfaces between the organizations. Another major finding was the need for cooperation between accreditation laboratories and the need to involve developing countries in the world of metrology.

The Kaarls Report^[59] published in 2003 examined the role of the BIPM in the evolving needs for metrology in trade, industry and society.

The CIPM has responsibility for commissioning the SI brochure, which is the formal definition of the International system of units. The brochure is produced by the CCU in conjunction with a number of other international organizations. Initially the brochure was only in French – the official language of the metre convention, but recent versions have been published simultaneously in both English and French, with the French text being the official text. The 6th edition was published in 1991,^[60] the 7th edition was published in 1998, and the 8th, in 2006.^[61] The most recent edition is the 9th edition, originally published as version 1 in 2019 to include the 2019 revision of the SI (a.k.a. "new SI"); it was updated to version 2 in December 2022 to include the new SI prefixesronna-, quetta-, ronto- and quecto- introduced in November 2022.^[1]