ISO/IEC 17025 Accreditation · 4 min read
ISO/IEC 17025 vs. ISO 9001 — Why 9001 Isn’t Enough for a Cal Lab
A supplier that waves an ISO 9001 certificate when you ask about calibration competence is answering a different question than the one you asked. Both standards are legitimate — they just prove different things.
Part of our guide to ISO/IEC 17025 Accreditation, Decoded.
ISO 9001: process management
ISO 9001 is a quality-management-system standard. Certification means an organization has defined its processes and follows them consistently, with management review and continual improvement. It says nothing specific about whether a given measurement result is technically valid.
ISO/IEC 17025: technical competence
ISO/IEC 17025 incorporates management-system elements but adds the technical requirements that matter for measurement: method validation, equipment and traceability, staff competence, and the estimation and reporting of measurement uncertainty. Accreditation to it is assessed by technical experts. That is why regulated customers ask for 17025, not 9001, for calibration.
Common questions
Can a lab hold both?
Yes, and many do. But for calibration that supports regulated product, the 17025 accreditation — with its scope — is the credential auditors look for.