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Links to other National Metrology Institutes

Australia	Commonwealth Scientific and Industrial Research Organisation (CSIRO) Australian Radiation Protection and Nuclear Safety Agency (ARPANSA)
Czech Republic	Czech Metrology Institute (CMI)
Denmark	Danish Primary and Reference Laboratories (DFM)
France	Laboratoire Primaire du Temps et des Fréquences (LPTF)
Germany	Physikalisch - Technische Bundesanstalt (PTB) (English) Physikalisch - Technische Bundesanstalt (PTB) (German)
Ireland	National Metrology Lab (NML)
Italy	Consiglio Nazionale delle Ricerche (Area di Torino) (CNR) Istituto di Metrologia 'Gustavo Colonnetti' (IMGC) Istituto Elettrotecnico Nazionale (IEN)
Japan	Electrotecnical Laboratory (ETL)
Korea	Korea Research Institute of Standards and Science (KRISS)
Malaysia	Standards and Industrial Research Institute (SIRIM)
Mexico	Centro Nacional de Metrologia (CENAM)
Singapore	Institute of Standards and Industrial Research (SISIR)
Slovenia	Standards and Metrology Institute (USM)
South Africa	South African National Laboratory (CSIR)
Taiwan, R.O.C.	National Measurement Laboratory (NML)
United Kingdom	National Physical Laboratory (NPL)
United States of America	National Institute of Standards and Technology (NIST)