International Committee For Weights and Measures - Consultative Committees

Consultative Committees

The CIPM has set up a number of consultative committees (CC) to assist it in its work. These committees are under the authority of the CIPM. The president of each committee, who is expected to take the chair at CC meetings, is usually a member of the CIPM. Apart from the CCU, members of the CCs are appointed by the CIPM from metrologists with appropriate experience based in the various member states.

These committees are:

  • CCAUV: Consultative Committee for Acoustics, Ultrasound and Vibration
  • CCEM: Consultative Committee for Electricity and Magnetism
  • CCL: Consultative Committee for Length
  • CCM: Consultative Committee for Mass and Related Quantities
  • CCPR: Consultative Committee for Photometry and Radiometry
  • CCQM: Consultative Committee for Amount of Substance - Metrology in Chemistry
  • CCRI: Consultative Committee for Ionizing Radiation
  • CCT: Consultative Committee for Thermometry
  • CCTF: Consultative Committee for Time and Frequency
  • CCU: Consultative Committee for Units

The CCRI has three separate sub-committees, each looking at different parts of the electromagnetic spectrum.

The CCU's role is to advise on matters related to the development of the SI and the preparation of the SI brochure. Unlike other CC's, its memebership is made up of nominees from other prominent national and international bodies such as International Organization for Standardization (ISO), National Institute of Standards and Technology (NIST), National Physical Laboratory (NPL), International Astronomical Union (IAU), International Union of Pure and Applied Chemistry (IUPAC) and International Union of Pure and Applied Physics (IUPAP).

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