| 国家 | 国家（英文） | 机构 | 缩写 |
| 奥地利 | Austria | E+E Elektronik GMBH | BEV/E+E |
| Umweltbundesamt GmbH | EAA |
| 比利时 | Belgium | Nuclear Calibration Laboratory, Belgian Nuclear Research Centre | SCK-CEN/LNK |
| 波黑 | Bosnia and Herzegovina | KJKP Sarajevogas d.o.o. Sarajevo | LABSAGAS |
| Institut za vode d.o.o. Bijeljina | IW |
| 克罗地亚 | Croatia | Faculty of Mechanical Engineering and Naval Architecture - Laboratory for Process Measurements | FSB-LPM |
| Faculty of Electrical Engineering and Computing - Primary Electromagnetic Laboratory | FER-PEL |
| Faculty of Mechanical Engineering and Naval Architecture - Laboratory for Testing of Mechanical Properties | FSB-LIMS |
| Faculty of Mechanical Engineering and Naval Architecture - Laboratory for Precise Measurement of Length | FSB-LPMD |
| Ruder Boskovic Institute - Secondary Standard Dosimetry Laboratory | IRB-SSDL |
| Croatian Meteorological and Hydrological Service - Independent Service for the Calibration Laboratory | DHMZ-SOUL |
| 捷克共和国 | Czech Republic | Institute of Photonics and Electronics | ÚFE/IPE |
| Research Institute of Geodesy, Topography and Cartography | VÚGTK |
| Czech Hydrometeorological Institute | CHMI |
| 丹麦 | Denmark | Hottinger Brüel & Kjaer A/S - Danish Primary Laboratory for Acoustics Section | HBK-DPLA |
| Trescal Ltd. | TRESCAL |
| Danish Technological Institute | DTI |
| FORCE Technology | FORCE |
| Technical University of Denmark | DTU |
| 爱沙尼亚 | Estonia | University of Tartu | UT |
| 芬兰 | Finland | Finnish Geospatial Research Institute | FGI-GG |
| MIKES-FMI Standard Laboratory | MIKES-FMI |
| Aalto University, Metrology Research Institute | Aalto |
| Radiation and Nuclear Safety Authority | STUK |
| Finnish Environment Institute | MIKES-SYKE |
| 法国 | France | Centre Technique des Industries Aérauliques et Thermiques | LNE-CETIAT |
| Laboratoire Temps Fréquence de Besançon | LNE-LTFB |
| Laboratoire commun de métrologie | LNE-LCM/CNAM |
| Laboratoire National Henri Becquerel/Commissariat à l'Energie Atomique | LNE-LNHB |
| Systèmes de Référence Temps - Observatoire de Paris | LNE-SYRTE |
| Laboratoire Associé de Débitmétrie Gazeuse | LNE-LADG |
| Ecole National Supérieure d'Arts et Métiers de Paris | LNE-ENSAM |
| Institut de Radioprotection et de Sûreté Nucléaire | LNE-IRSN |
| LNE-TRAPIL | LNE-TRAPIL |
| 德国 | Germany | Bundesanstalt für Materialforschung und -prüfung | BAM |
| Umweltbundesamt | UBA |
| Bundesamt für Verbraucherschutz und Lebensmittelsicherheit | BVL |
| 希腊 | Greece | National Laboratory of Chemical Metrology/General Chemical State Laboratory - Hellenic Institute of Metrology | EXHM/GSCL-EIM |
| Ionizing Calibration Laboratory/Greek Atomic Commission - Helenic Institute of Metrology | IRCL/GAEC-EIM |
| 意大利 | Italy | Istituto Nazionale di Metrologia delle Radiazioni Ionizzanti | ENEA-INMRI |
| 立陶宛 | Lithuania | Lithuanian Energy Institute | LEI |
| 卢森堡 | Luxembourg | Laboratory of Geophysics of the University of Luxembourg | LGUL |
| 挪威 | Norway | Norwegian Radiation and Nuclear Safety Authority | DSA |
| Norsk Institutt for Luftforskning | NILU |
| Norwegian Institute for Water Research | NIVA |
| 波兰 | Poland | Institute of Low Temperature and Structure Research | INTiBS |
| National Centre for Nuclear Research - Radioisotope Centre POLATOM | POLATOM |
| 葡萄牙 | Portugal | Laboratory for Radiation Protection and Safety | IST/LPSR |
| Instituto Hidrográfico | IH-LQPM |
| 罗马尼亚 | Romania | Horia Hulubei National Institute of R&D for Physics and Nuclear Engineering | IFIN-HH |
| 塞尔维亚 | Serbia | Vinča Institute of Nuclear Sciences | VINS |
| 斯洛文尼亚 | Slovenia | Metrology Institute of the Republic of Slovenia/University of Ljubljana-Faculty of Electrical Engineering/Laboratory of Metrology And Quality | MIRS/UL-FE/LMK |
| Metrology Institute of the Republic of Slovenia/University of Maribor-Faculty of Mechanical Engineering/Laboratory for Production Measurement | MIRS/UM-FS/LTM |
| Slovenian Institute of Quality and Metrology | MIRS/SIQ/Metrology |
| Metrology Institute of the Republic of Slovenia/National Institute of Biology/Department of Biotechnology and Systems Biology | MIRS/NIB/FITO |
| Metrology Institute of the Republic of Slovenia/Jozef Stefan Institute/Low and Medium Energy Physics F2, Environmental Sciences O2 | MIRS/IJS/F-2,O-2 |
| Metrology Institute of the Republic of Slovenia/Institute of Metals and Technology/Laboratory of Pressure Metrology | MIRS/IMT/LMT |
| Metrology Institute of the Republic of Slovenia/National Institute of Chemistry Slovenia/Laboratory for Environmental Sciences and Engineering | MIRS/KI/L05 |
| Metrology Institute of the Republic of Slovenia/Slovenian National Building and Civil Engineering Institute/Laboratory for Cements, Mortars and Ceramics | MIRS/ZAG/SM 480 |
| Metrology Institute of the Republic of Slovenia/University of Primorska, Science and Research Centre of Koper/Olive Oil Testing Laboratory | MIRS/UP-ZRS/LPOO |
| 西班牙 | Spain | Real Instituto y Observatorio de la Armada | ROA |
| Instituto de Óptica Daza de Valdés | IO-CSIC |
| Instituto de Salud Carlos III | ISCIII |
| Instituto Nacional de Técnica Aeroespacial | INTA |
| Laboratorio Central Oficial de Electrotecnia | LCOE |
| Centro de Investigaciones Energética, Medioambientales y Tecnológicas | CIEMAT |
| 瑞典 | Sweden | Swedish Radiation Safety Authority | SSM |
| 瑞士 | Switzerland | Institut de radiophysique appliquée | IRA |
| Physikalisch-Meteorologisches Observatorium Davos / World Radiation Center | PMOD/WRC |
| MBW Calibration AG | MBW |
| 土耳其 | Turkey | Nuclear Energy Research Institute | TENMAK-NÜKEN |
| Underwater Acoustics Laboratory | MRC MI-UAL |
| 英国 | United Kingdom | LGC Ltd. | LGC |
| TUV SUD LIMITED | NEL |
| National Measurement and Regulation Office | NMO |
| National Gear Metrology Laboratory | NGML |
| National Institute for Biological Standards and Control | NIBSC |
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