How do I verify a supplier's ISO 9001 certificate?

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Accepted Answer

Ask for the complete certificate and verify the company name, manufacturing site, certification scope, standard version, issue and expiry dates, and certification body. Search the certificate in IAF CertSearch and, if necessary, confirm it directly with the issuing certification body and its accreditation body. ISO itself does not issue ISO 9001 certificates, and ISO 9001 certifies a quality-management system rather than the quality of a particular product. Request the Full ISO 9001 Certificate Ask the supplier for a complete, legible copy of its ISO 9001 certificate rather than relying only on a website badge or marketing statement. Check the exact registered company name, covered manufacturing or operating locations, certification scope, standard version, certificate number, issue date, expiry date where stated, and identity of the certification body. Make sure the scope is relevant to the activities involved in producing or supplying your product. Search IAF CertSearch Use the International Accreditation Forum's CertSearch database to search for the company or certificate number. Review the available information about the certificate's status, the certification body, and its accreditation. If the certificate does not appear, do not immediately assume it is fraudulent; records may be incomplete or the certificate may not be covered by the database. Ask the supplier and issuing body to clarify the result. Visit https://www.cert-search.org/. Verify the Certification and Accreditation Bodies Contact the certification body through contact details obtained independently, rather than relying solely on contact information printed on a questionable document. Confirm whether it issued the certificate, whether the certificate remains valid, and whether the site's activities fall within the certified scope. Check whether the certification body is accredited for the relevant standard by a recognized accreditation body. Accreditation provides an additional level of confidence but should be checked in context. Understand What ISO 9001 Proves ISO 9001 concerns a quality-management system. It does not certify that every product made by the company meets your specifications, passes a particular safety test, or satisfies destination-country regulations. Use the certificate as one part of supplier due diligence alongside product-specific test reports, approved samples, inspection results, process controls, and production traceability. Official guidance is available at https://www.iso.org/certification.html and https://www.iso.org/iso-9001-quality-management.html.