Participation au CIPM MRA

National Metrology Institute of South Africa

iThemba Laboratory for Accelerator-Based Sciences

General Directorate of Metrology and Calibration

Physikalisch-Technische Bundesanstalt

Federal Institute for Materials Research and Testing/Bundesanstalt für Materialforschung und -prüfung

German Federal Office of Consumer Protection and Food Safety/Bundesamt für Verbraucherschutz und Lebensmittelsicherhei

Federal Environment Agency/Umweltbundesamt

Saudi Standards, Metrology and Quality Organization/National Measurement and Calibration Center

Instituto Nacional de Tecnología Industrial

Comision Nacional de Energia Atomica

National Measurement Institute, Australia

Australian Nuclear Science &Technology Organisation

Australian Radiation Protection and Nuclear Safety Agency

Bundesamt für Eich- und Vermessungswesen

E+E ELEKTRONIK Ges.m.b.H.

Umweltbundesamt GmbH

Azerbaijan Institute of Metrology

Bangladesh Standards and Testing Institution

Designated Reference Institute for Chemical Measurements

State Committee for Standardization of the Republic of Belarus

Belarussian State Institute for Metrology

SPF Economie, DG Qualité et Sécurité

Nuclear Calibration Laboratory, Belgian Nuclear Research Centre

Instituto Boliviano de Metrologia

Institute of Metrology of Bosnia and Herzegovina

Institut za vode d.o.o. Bijeljina

KJKP Sarajevogas d.o.o. Sarajevo

Botswana Bureau of Standards

Instituto Nacional de Metrologia, Qualidade e Tecnologia

National Laboratory for Metrology of Ionising Radiation/Institute of Radiation Protection and Dosimetry CNEN

Observatório Nacional/Divisão Serviço da Hora

Bulgarian Institute of Metrology

National Metrology Centre under the Ministry of Industry, Science, Technology & Innovation

National Research Council of Canada

TransCanada Calibrations Ltd

Caribbean Community

Antigua and Barbuda Bureau of Standards

The Belize Bureau of Standards

Barbados National Standards Institution

Dominica Bureau of Standards

Grenada Bureau of Standards

The Guyana National Bureau of Standards

Suriname Department of Trade and Industry

Saint Kitts and Nevis Bureau of Standards

Saint Lucia Bureau of Standards

Saint Vincent and The Grenadines Bureau of Standards

Trinidad and Tobago Bureau of Standards

Instituto Nacional de Normalización

Comision Chilena de Energia Nuclear

Centro de Estudios, Medición y Certificación de Calidad

Calibraciones Industriales S.A

Chemical Laboratory of Codelco Norte Division

Laboratorio Custodio de Patrones Nacionales de Longitud, Pontificia Universidad Católica de Chile

Empresa Nacional de Aeronáutica

Instituto de Investigaciones y Control

Instituto de Salud Pública de Chile

Universidad de Concepción

National Institute of Metrology

Hangzhou Applied Acoustics Research Institute

Instituto Nacional de Metrología de Colombia

Korea Research Institute of Standards and Science

Laboratorio Costarricense de Metrología

Instituto Costarricense de Electricidad (ICE), Laboratorio Metrológico de Variables Eléctricas

Laboratorio de Metrología, Instituto Costarricense de Electricidad

Laboratorio de Fuerza del Laboratorio Nacional de Materiales y Modelos Estructurales

Laboratorio Nacional de Metrología, Grandes Masas y Volumen

State Office for Metrology

Meteorological and Hydrological Service / Calibration Laboratory

FER - Primary Electromagnetic Laboratory

FSB - Laboratory for Testing of Mechanical Properties

FSB - Laboratory for Process Measurements

Faculty of Mechanical Engineering and naval architecture, Laboratory for precise measurement of length

IRB - Secondary Standard Dosimetry Laboratory of the Ruder Boskovic Institute

Danish Fundamental Metrology A/S

Danish Technological Institute

Technical University of Denmark

FORCE Technology

Hottinger Brüel & Kjær A/S

Trescal Ltd

National Institute of Standards

Emirates Metrology Institute

Federal Authority for Nuclear Regulation SSDL

Instituto Ecuatoriano de Normalizacion

Centro de Metrología del Ejército Ecuatoriano

Laboratorios de Calibraciones Dosimétricas de la Subsecretaría de Control y Aplicaciones Nucleares

Centro Español de Metrología

Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas

Instituto Nacional de Técnica Aerospacial

Instituto de Optica 'Daza de Valdés'

Instituto de Salud Carlos III

Laboratorio Central Oficial de Electrotecnica

Real Instituto y Observatorio de la Armada

Central Office of Metrology

University of Tartu, Institute of Chemistry

National Institute of Standards and Technology

Naval Undersea Warfare Center Division Newport, Underwater Sound Reference Division

National Metrology Institute of Ethiopia

VTT Technical Research Centre of Finland Ltd, Centre for Metrology / Mittatekniikan keskus

Finnish Geospatial Research Institute

Aalto University School of Electrical Engineering

Finnish Meteorological Institute

Finnish Environment Institute, Laboratories

Radiation and Nuclear Safety Authority

Laboratoire National de Métrologie et d'Essais

Centre Technique des Industries Aérauliques et Thermiques

École Nationale Supérieure d'Arts et Métiers de Paris

Institut de Radioprotection et de Sûreté Nucléaire

Laboratoire Associé de Débitmétrie Gazeuse

Conservatoire National des Arts et Métiers/Laboratoire Commun de Métrologie

Commissariat à l'Énergie Atomique/Laboratoire National Henri Becquerel

Université de Franche-Comté, Laboratoire Temps-fréquence de Besançon

Observatoire de Paris/Systèmes de Référence Temps-Espace

Société des Transports Pétroliers par Pipeline

Georgian National Agency for Standards and Metrology

Ghana Standards Authority

Hellenic Institute of Metrology

National Laboratory of Chemical Metrology/General Chemistry State Laboratories - Hellenic Institute of Metrology

Ionizing Radiation Calibration Laboratory/Greek Atomic Energy Commission - Hellenic Institute of Metrology

Standards and Calibration Laboratory

Government Laboratory

Government Office of the Capital City Budapest

CSIR National Physical Laboratory of India

Bhabha Atomic Research Centre

Directorate for National Measurement Standards of Mechanics, Radiation, and Biology and Directorate for National Measurement Standards of Thermoelectric and Chemistry, National Standardization Agency of Indonesia

Center for Technology of Radiation Safety and Metrology / National Nuclear Energy Agency

Iran National Standards Organization

Central Organization for Standardization and Quality Control

NSAI National Metrology Laboratory

National Physical Laboratory of Israel

National Institute of Metrological Research/Istituto Nazionale di Ricerca Metrologica

Ente per le Nuove Tecnologie, l'Energia e l'Ambiente -Istituto Nazionale di Metrologia delle Radiazioni Ionizzanti

Bureau of Standards Jamaica

National Metrology Institute of Japan, AIST

Chemicals Evaluation and Research Institute

Japan Electric Meters Inspection Corporation

National Institute of Information and Communications Technology

RSE "Kazakhstan Institute of Standardization and Metrology"

Public Authority for Industry

LNMC Metrology Bureau

State Research Institute, Center for Physical Sciences and Technology

Lithuanian Energy Institute

Institut Luxembourgeois de la Normalisation, de l'Accréditation, de la Sécurité et qualité des produits et services – Bureau Luxembourgeois de Métrologie

Bureau of Metrology, Ministry of Economy

National Metrology Institute of Malaysia

Department of Chemistry Malaysia (DOC)

Malaysian Nuclear Agency

Malta Competition and Consumer Affairs Authority - Standards and Metrology Institute

Laboratoire Public d’Essais et d’Études, Laboratoire National de Métrologie

Mauritius Standards Bureau

Centro Nacional de Metrología

Instituto Nacional de Ecología y Cambio Climático

Instituto Nacional de Investigaciones Nuclear

National Metrology Institute of the Republic of Moldova

Mongolian Agency for Standardization and Metrology

Bureau of Metrology

Kenya Bureau of Standards

Namibian Standards Institution

Norwegian Metrology Service/Justervesenet

Norwegian Radiation and Nuclear Safety Authority

Norwegian Institute for Air Research

Norwegian Institute for Water Research

Measurement Standards Laboratory of New Zealand

Directorate General for Specifications and Measurements

Uzbek National Institute of Metrology of Uzstandard Agency

National Physical and Standards Laboratory

Centro Nacional de Metrología de Panamá AIP

Instituto Nacional de Tecnología, Normalización y Metrología

VSL Dutch Metrology Institute

National Institute for Quality/Instituto Nacional de Calidad

National Metrology Laboratory of the Philippines

Standards and Testing Division, Industrial Technology Development Institute

Central Office of Measures

Institute of Low Temperature and Structure Research/Instytut Niskich Temperatur i Badañ Strukturalnych

National Centre for Nuclear Research, Radioisotope Centre

Instituto Português da Qualidade

Instituto Hidrográfico - Laboratório de Química e Poluição do Meio Marinho

Laboratório de Proteção e Segurança Radiológica, Instituto Superior Técnico

Laboratório Nacional de Engenharia Civil - Unidade de Hidráulica Metrológica

Qatar General Organization for Standards and Metrology

National Institute of Metrology/Institutul National de Metrologie

National Institute of Research and Development for Physics and Nuclear Engineering - "Horia Hulubei"

National Physical Laboratory

LGC Ltd.

National Gear Metrology Laboratory

National Institute of Airborne Acoustic Metrology

National Institute for Biological Standards and Control

National Measurement and Regulation Office, formerly National Measurement Office

TÜV SÜD National Engineering Laboratory

Federal Agency on Technical Regulating and Metrology

All-Russian Scientific Research Institute of Physical Technical Measurements, Rosstandart

D.I. Mendeleyev Institute for Metrology, Rosstandart

Russian Scientific Research Institute for Metrological Service, Rosstandart

All-Russian Scientific Research Institute for Optical and Physical Measurements, Rosstandart

Directorate of Measures and Precious Metals

Vinča Institute of Nuclear Sciences

National Metrology Centre, Agency for Science, Technology and Research

Health Sciences Authority

Slovak Institute of Metrology/Slovenský Metrologický Ústav

Metrology Institute of the Republic of Slovenia, Ministry of the Economy, Tourism and Sport

MIRS/Jozef Stefan Institute/Low and Medium Energy Physics F2, Environmental Sciences O2

MIRS/Institute of Metals and Technology/Laboratory of Pressure Metrology

MIRS/National Institute of Biology/Department of Biotechnology and Systems Biology

MIRS/Slovenian Institute of Quality and Metrology/Metrology

MIRS/University of Ljubljana, Faculty of Electrical Engineering/Laboratory of Metrology and Quality

MIRS/University of Maribor, Faculty for Mechanical Engineering/Laboratory for Production Management

MIRS/Slovenian National Building and Civil Engineering Institute/Laboratory for Cements, Mortars and Ceramics

MIRS/Science and Research Centre Koper/ Laboratory of the Institute for Oliveculture

Measurement Units, Standards & Services Department

RISE Research Institutes of Sweden AB

Swedish Radiation Safety Authority

Federal Institute of Metrology METAS

Institut Universitaire de Radiophysique Appliquée/Institute of Radiation Physics

MBW Calibration AG

Physikalisch-Meteorologisches Obseratorium Davos and World Radiation Center

Bureau of Standards, Metrology & Inspection

Industrial Technology Research Institute/Center for Measurement Standards

National Radiation Standard Laboratory of the Institute of Nuclear Energy Research

Telecommunication Laboratories, ChungHwa Telecom Co. Ltd

Czech Metrology Institute

Czech Hydrometeorological Institute

Institute of Photonics and Electronics, Czech Academy of Sciences

Research Institute of Geodesy, Topography and Cartography

National Institute of Metrology (Thailand)

Bureau of Quality and Safety of Food, Department of Medical Science, Ministry of Public Health

Bureau of Radiation and Medical Devices, Department of Medical Science, Ministry of Public Health

Office of Atoms for Peace

Thailand Institute of Scientific and Technological Research, Ministry of Higher Education, Science, Research and Innovation

Agence Nationale de Métrologie, Ministère du Commerce et de l'Artisanat

Laboratoire de métrologie du Ministère de la Défense Nationale

National Institute of Research and Physico and Chemical Analysis/Institut National de Recherches et d'Analyses Physico-chimiques

National Metrology Institute of Türkiye/TÜBITAK Ulusal Metroloji Enstitüsü

Marmara Research Center, Materials Institute - Underwater Acoustics Laboratory

Nuclear Energy Research Institute

Ministry of Economic Development and Trade of Ukraine/Derzhspozhivstandard of Ukraine

National Scientific Centre "Institute of Metrology"

State Enterprise "Ivano-Frankivsk scientific and production center for standardization, metrology and certification"

State Enterprise "Scientific and Research Institute for Metrology of Measurement and Control Systems"

State Enterprise "All-Ukrainian State Scientific and Production Center of Standardization, Metrology, Certification and Consumer' Rights Protection"

Laboratorio Tecnológico del Uruguay

Laboratorios Tecnogestión - Ministerio de Industria, Energía y Minería

Administración Nacional de Usinas y Transmisiones Eléctricas

Vietnam Metrology Institute - Directorate for Standards and Quality

Scientific and Industrial Research and Development Centre - NMI

European Space Agency

International Atomic Energy Agency

European Commission - Joint Research Centre

World Meteorological Organization

Swiss Federal Laboratories for Materials Testing and Research

NOAA Earth System Research Laboratory

Physikalisch-Meteorologisches Obseratorium Davos and World Radiation Center