R.I. Wielgosz is a BIPM representative to the Codex Alimentarius Commission, and ISO TC 212, Clinical laboratory testing and in vitro diagnostic test systems, Working Group 2 on Reference Systems, and ISO TC 146 on Air Quality, and is a member of the editorial board of Accreditation and Quality Assurance.

S. Westwood is the BIPM and CCQM representative at ISO REMCO, and the BIPM representative to the CIPM Ad Hoc Material Metrology Working Group.

R. Josephs is the BIPM representative to the Codex Committee on Methods of Analysis and Sampling (CCMAS) of the Codex Alimentarius Commission and member of the related electronic working group on measurement uncertainty.

R.I. Wielgosz is the Executive Secretary of the CCQM.

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

E. Flores is a member of the CCQM Working Group on Gas Analysis (GAWG).

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

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