Australian Radiation Protection and Nuclear Safety Agency, Australia, APMP

Bundesamt für Eich- und Vermessungswesen, Austria, EURAMET

Bulgarian Institute of Metrology, Bulgaria, EURAMET

Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas, Spain, EURAMET

Czech Metrology Institute, Czechia, EURAMET

National Commission of Atomic Energy, Argentina, SIM

Istituto Nazionale di Metrologia delle Radiazioni Ionizzanti, Italy, EURAMET

Glowny Urzad Miar, Central Office of Measures, Poland, EURAMET

Helenic Ionizing Radiation Calibration Laboratory, Greece, EURAMET

Rudjer Boskovic Institute; became: Secondary Standard Dosimetry Laboratory of the Ruder Boskovic Institute, HMI/IRB-SSDL, Croatia, EURAMET

Instituto Tecnológico e Nuclear, Instituto Superior Técnico, Universidade Técnica de Lisboa (became IST-LPSR), Portugal, EURAMET

Commissariat à l'énergie atomique / Laboratoire National Henri Becquerel, France, EURAMET

Laboratorio Nacional de Metrologia das Radiaçoes Ionizantes, IRD, Brazil, SIM

Federal Institute of Metrology, Switzerland, EURAMET

Hungarian Trade Licensing Office; now BFKH, Hungary, EURAMET

National Institute of Standards and Technology, United States, SIM

National Research Council, Canada, SIM

Norvegian Radiation Protection Authority, Norway, EURAMET

Physikalisch-Technische Bundesanstalt, Germany, EURAMET

Radiation Metrology and Testing Centre, Latvia, EURAMET

Slovensky Metrologicky Ustav, Slovakia, EURAMET

Swedish Radiation Safety Authority, Sweden, EURAMET

Radiation and Nuclear Safety Authority, Finland, EURAMET

D.I. Mendeleyev Institute for Metrology, Rosstandart, Russian Federation, COOMET

VSL, Netherlands, EURAMET