Great Britain

National Physical Laboratory - NPL

Germany

Physikalisch-Technischen Bundesanstalt

Italy

Istituto Elettrotecnico Nazionale Galileo Ferraris - IEN

The Netherlands

Nederlands Meetinstituut - NMi

Switzerland

Bundesamt für Metrologie und Akkreditierung - METAS

USA

National Institute of Standards and Technology - NIST

CEN – European Committee for Standardization

CENELEC – European Committee for Electrotechnical Standardization

ISO – International Organization for Standardization

(IEC – International Electrotechnical Commission

ILAC – International Laboratory Accreditation Cooperation

DAR – Deutscher Akkreditierungsrat

DKD – Deutscher Kalibrierdienst (German Calibration Service)

EA – European co-operation for Accreditation

OIML – Organisation Internationale de Métrologie Légale

WELMEC – European Cooperation in Legal Metrology

Metre convention/BIPM

EUROMET – European collaboration in Measurement Standards

COOMET – Euro-Asian Cooperation of National Metrological Institutions

IMEKO – International Measurement Confederation

NCSL – National Conference of Standards Laboratories

EUROLAB - European laboratory

EUROCHEM – European chemical laboratory

CROLAB –Croatian laboratory

HMD – Croatian Metrology Society