Precision Mass Spec is a testing lab in the United States. As of Nov 6, 2026, 1 vendor we track publishes COAs from it, and it ran 5 COAs of those we checked. This page lists facts about the lab and how to check one of its reports. We don't rate labs or judge their results.
It publishes no address. It offers a certificate issued under a company name of the client's choosing.
Open testwithprecision.com/coa-library and type the COA number, which starts with PMS-, into the search box. The library holds only COAs the client chose to publish. The lab's record should show the same client, lot and results as the copy the vendor posts.
As of , we found no ISO/IEC 17025 accreditation for Precision Mass Spec in the accreditation bodies' directories. Its site says it is not accredited and is not pursuing ISO/IEC 17025 accreditation. ISO/IEC 17025 is the international standard for testing lab competence. An accreditation covers only the methods listed in its scope.
Per testwithprecision.com, Precision Mass Spec offers:
Each count is the number of the vendor's sampled COAs this lab ran, out of those we checked.
Facts come from the lab's own site and the accreditation bodies' directories. The vendor list comes from the COAs on each vendor page. How lab testing is counted →
