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Alemania -
Physikalisch - Technische Bundesanstalt - (PTB),
Deutscher AkkreditierungsRat - (DAR)
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Australia -
National Association of Testing Authorities - (NATA),
Standards Australia
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Austria -
Federal Ministry for Economic Affairs - (BmWA)
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Bélgica -
Belgian Accreditation Organisation for Testing Laboratories - (BELTEST)
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Brasil -
National Institute for Metrology Standardization and Industrial Quality - (INMETRO)
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Canada -
NRC Institute for National Measurement Standards - (INMS),
Standards Council of Canada - (SCC),
Program for Accredation of Laboratories - CANADA - (PALCAN)
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China -
China National Accreditation Committee of Laboratories - (CNACL)
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Colombia -
Instituto Colombiano de Normas Técnicas y Certificación - (ICONTEC)
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Corea -
Korea Research Institute of Standards and Science - (KRISS)
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Dinamarca -
Danish Institute of Fundamental Metrology - (DFM)
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España -
Entidad Nacional de Acreditación - (ENAC),
Asociación Española de Normalización y Certificación - (AENOR)
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Estados Unidos -
US National Institute of Standards & Technology - (NIST),
National Voluntary Laboratory Accreditation Program - (NVLAP),
American Association for Laboratory Accreditation - (A2LA)
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Francia -
Laboratoire National d'Essais - (LNE),
Comité Français d'Accréditation - (COFRAC)
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Holanda -
Standards Institute - (NNI),
Dutch Raad voor Accreditatie - (RvA)
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Italia -
National Standard Body - (UNI),
Sistema Nazionale per l'Accreditamento di Laboratorio - (SINAL)
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Japón -
Japan Accreditation Board - (JAB),
Japan National Laboratory Accreditation - (JNLA),
Japan Industrial Standards Committee - (JISC)
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Mexico -
Centro Nacional de Metrologia - (CENAM),
Sistema Nacional de Acreditamiento de Laboratorios de Pruebas - (SINALP)
Entidad Mexicana de Acreditación
- (EMA)
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Portugal -
Instituto Português da Qualidade - (IPQ),
Associação de Laboratórios Acreditados de Portugal - (RELACRE)
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Reino Unido -
National Physics Laboratory - (NPL),
Center For Basic Metrology - (CBM),
United Kingdom Accreditation Service - (UKAS NAMAS)
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Sudafrica -
National Metrology Lab - (NML),
South African National Laboratory Accreditation Service - (SANAS)
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Suecia -
Swedish Board for Accreditation and Conformity Assessment - (SWEDAC)
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Suiza -
Service d'accréditation Suisse - (SAS)