Companies seeking to be eligible for accreditation by NAS must conform to ISO/IEC 17021:2011, Conformity assessment – ‘Requirements for bodies providing audit and certification of management systems’, along with ISO 19011:2002, ‘Guidelines for quality and/or environmental management systems auditing’.


We Accredit Certification Bodies to the following ISO Standards:

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National Accreditation Services (NAS) is a 3rd party accreditor of ISO Certification Bodies.

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National Accreditation Services

Accreditation Services for ISO Certification Bodies


  • ISO 9001
  • ISO 14001