How to Find An ISO 17025 Accredited Laboratory


Today, I answered a question on LinkedIn and thought it would be an excellent post to share on my blog. The post asked a question that I encounter quite often, “Does anyone know where I can find a list of metrology labs in the US?” Well, I took the answer that I had posted which is a list of directory searches for the ISO/IEC 17025 accreditation bodies in the United States that are members of the ILAC Mutual Recognition Arrangement or ILAC/MRA. Furthermore, I have included a link to the full ILAC member directory and the BIPM directory of National Metrology Institutes or NMIs. I hope the list provided is great tool for those searching for an accredited testing or calibration laboratory.

Please refer to the list below for directories of ISO/IEC 17025:2005 accredited laboratories in the United States.
This list was updated: 09/05/2018



ANAB (formerly ACLASS)



If you are looking for more information, the ILAC website will identify signatories of the ILAC/MRA; but, it will not provide you with a list of laboratories.

If you are looking for National Metrology Institutes, check out the BIPM website.

If you find this list helpful and want to connect or if I have you have any additional information that you would like to share, please contact me at

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About the Author

Richard Hogan

Richard Hogan is the CEO of ISO Budgets, L.L.C., a U.S.-based consulting and data analysis firm. Services include measurement consulting, data analysis, uncertainty budgets, and control charts. Richard is a systems engineer who has laboratory management and quality control experience in the Metrology industry. He specializes in uncertainty analysis, industrial statistics, and process optimization. Richard holds a Masters degree in Engineering from Old Dominion University in Norfolk, VA. Connect with Richard on Google+ and LinkedIn.

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