American Association for Laboratory Accreditation (A2LA)
The A2LA is a signatory to the ILAC Mutual Recognition Arrangement for Calibration. They are dedicated to the formal recognition of competent testing and calibration laboratories, biobanking facilities, inspection bodies, product certification bodies, proficiency testing providers, and reference material producers. A2LA is among the largest accreditation bodies in the world with over 4,000 actively accredited certificates representing all 50 U.S. states and more than 50 countries. They are the only independent, 501(c)3, non-profit, internationally recognized accreditation body in the United States that offers a full range of comprehensive conformity assessment accreditation services. Search for A2LA accredited calibration laboratories.
https://www.A2LA.org
National Voluntary Laboratory Accreditation Program (NVLAP)
NVLAP is a signatory to the ILAC Mutual Recognition Arrangement for Calibration. Administered by the National Institute of Standards and Technology (NIST), NVLAP provides third-party accreditation to testing and calibration laboratories in response to legislative actions or requests from government agencies or private-sector organizations. Search for NVLAP accredited calibration laboratories.
https://www.nist.gov/nvlap
ANSI National Accreditation Board (ANAB)
ANAB is a signatory to the ILAC Mutual Recognition Arrangement for Calibration. They are a non-governmental organization that provides accreditation services and training to public- and private-sector organizations, serving the global marketplace. ANAB is the largest accreditation body in North America and provides services in more than 75 countries. Search for ANAB accredited calibration laboratories.
https://anab.ansi.org
International Accreditation Service (IAS)
IAS is a signatory to the ILAC Mutual Recognition Arrangement for Calibration. They are a non-profit, public-benefit corporation that has been providing accreditation services since 1975. As one of the leading accreditation bodies in the United States, IAS is a signatory to the three primary international organizations that form a unified system for evaluating and recognizing competent accreditation bodies worldwide. Search for IAS accredited calibration laboratories.
https://www.iasonline.org