Dr R.I. Wielgosz is the BIPM representative to the World Meteorological Organization (WMO), the World Health Organization (WHO), and the Codex Alimentarius Commission. He is Executive Secretary of the Joint Committee for Traceability in Laboratory Medicine (JCTLM) and member of its working groups, and is on the editorial board of Accreditation and Quality Assurance.

Dr S. Westwood represents the BIPM and CCQM at ISO-REMCO.

Dr R.I. Wielgosz is the Executive Secretary of the CCQM and a member of its Working Groups.

Dr J. Viallon is a member of the CCQM Working Groups on Gas Analysis (GAWG) and Surface Analysis (SAWG).

Dr S. Westwood is a member of the CCQM Working Group on Organic Analysis (OAWG) and a technical observer on the CCQM Working Group on Key Comparisons and CMC Quality (KCWG).

Dr R. Josephs is a member of the CCQM Working Groups on Bioanalysis (BAWG) and Organic Analysis(OAWG).