– the intergovernmental organization through which Member States act together
     on matters related to measurement science and measurement standards.
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Discussions on the revised SI in the Consultative Committees

The Consultative Committee for Units (CCU) advises the CIPM on matters relating units of measurement, particularly related to the revision of the SI and preparation of successive editions of the SI Brochure.

Following the adoption by the CGPM (2007) of Resolution 12 on the possible redefinition of certain base units of the SI, and in response to the CIPM's request for the Consultative Committees to provide feedback to the CCU, over the last few years many of the Consultative Committees have created special working groups dedicated to considering the implications of the possible future revision of the SI. A list of the principal groups is given below, and links are provided to related Recommendations made by the Committees. For more details the reader is referred to the full reports of the meetings.