ISO certificate

ISO/IEC 17025 Accreditation (Testing & Calibration Laboratories)

A practical guide to competence, method control, traceability, and audit-ready results — built for laboratory confidence.

What ISO/IEC 17025 is (in operational terms)

ISO/IEC 17025 is the core competence standard for testing and calibration laboratories. Audits focus on technical evidence: method validity, traceability, equipment control, competence, and whether reported results are reliable and repeatable.

Typical scope choices that affect the audit

  • Which tests/calibrations and methods are included in the scope.
  • Sample handling boundaries (collection, transport, storage) and responsibilities.
  • Equipment ranges and reference standards in scope.
  • Subcontracted tests and how you control them.

Key ISO/IEC 17025 expectations

  • Method validity: validation/verification and ongoing performance checks.
  • Measurement traceability: references, calibration chains, and evidence.
  • Uncertainty & decision rules: where applicable, documented and applied.
  • Equipment control: calibration, maintenance, and suitability.
  • Results reporting: complete, controlled reports with retained records.

Next step

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