Practical information

The General Conference on Weights and Measures (CGPM) is the BIPM's plenary and policy-making body and supreme authority, composed of representatives of:

• Member States (States that have ratified or acceded to the Metre Convention)
• Associate Members (States or Economies who engage with the international metrology system)
• International liaison organizations (international bodies concerned with metrology)

The CGPM meets every four to six years to make decisions on scientific, institutional and financial matters related to the BIPM and its work.

Information desk

During the 28th meeting of the CGPM, an information desk will be open in the entrance hall during the following hours:

• 13 October 2026: from 8 h 30 to 17 h 15
• 14 October 2026: from 8 h 30 to 17 h 30
• 15 October 2026: from 8 h 30 to 16 h 00

This facility will be available to participants for:

• providing general information regarding venue facilities, the programme and social events
• general inquiries

Documents and information

As all official documents are being distributed electronically, distribution of documents in paper will be strictly limited.

All meeting documents are posted on the webpage of the 28th meeting of the CGPM.