American National Standards Institute
http://www.ansi.org/


APLAC
http://www.aplac.org/


International Organization for Standardization (ISO)
http://www.iso.org/iso/home.html


International Bureau of Weights and Measures
http://www.bipm.org/en/home/


International Electrotechnical Commission
http://www.iec.ch/


International Organization of Legal Metrology (OIML)
http://www.oiml.org/


International Union of Independent Laboratories (UILI)
http://www.uili.org


Measurement Uncertainty
http://www.measurementuncertainty.org/


National Institute of Standards and Technology
http://www.nist.gov


National Conference of Standards Laboratories (NCSL)
http://www.ncsli.org/


The Organisation for Economic Co-operation and Development (OECD)
http://www.oecd.org/


RVA – Publication of ILAC-P15
http://www.rva.nl


South African Development Community Co-operation in Accreditation
http://www.sadca.org/


World Trade Organization (WTO)
http://www.wto.org/