Prof. M. Kühne is a member of the German Physical Society (DPG), a Fellow of the Institute of Physics, UK, and an editorial board member of the journal Measurement Science and Technology. He is an adjunct Professor at the Faculty of Mathematics and Physics of Leibniz University, Hanover, Germany, and a member of the Scientific Advisory Board of the Kiepenheuer Institute of Solar Physics, Freiburg, Germany. Prof. M. Kühne is Chairman of the JCRB and the JCGM.

C. Thomas is a member of the “Cabinet scientifique des Secrétaires perpétuels de l'Académie des sciences de Paris”. In this context, she is a member and acts as the Scientific Secretary of the permanent committee of the Académie des Sciences “Science et métrologie”. C. Thomas is a member of the Organizing Committee and of the Scientific Committee of the International Congress of Metrology 2011, to be held in Paris from 3 to 6 October 2011 (“Metrology'2011”).

C. Thomas is the Executive Secretary of the CCU. She is a member of the CCEM working groups on proposed modifications of the SI (CCEM WGSI) and on coordination of the regional metrology organizations (CCEM RMO WG), a member of the CCM Working Group on the SI Kilogram (CCM WGSI kg), and a non-voting member of the CCT Working Group on Key Comparisons (WG 7).

M. Stock is Executive Secretary of the CCEM, Executive Secretary of the CCPR and an ex officio member of all CCPR working groups.

R. Goebel organizes the review of comparison reports and protocols within the CCPR Key Comparison Working Group.

A. Picard is Executive Secretary of both the Consultative Committee for Mass and Related Quantities (CCM) and the Consultative Committee for Thermometry (CCT). The CCT, all nine of its working groups and its task group met at the BIPM in May 2010.