Overview
ISO/IEC 17025:2017 - General requirements for the competence of testing and calibration laboratories - defines the criteria laboratories must meet to demonstrate technical competence, impartiality and consistent operation. Applicable to all organizations performing laboratory activities (testing, calibration, sampling), this international standard is widely used for laboratory accreditation, regulatory recognition and mutual acceptance of results across borders.
Key topics and technical requirements
ISO/IEC 17025:2017 is organized to cover both technical and management elements required for reliable laboratory results:
- Scope & definitions - applies to any size laboratory and defines terms such as laboratory, impartiality and decision rule.
- General requirements - requirements for impartiality and confidentiality.
- Structural and resource requirements - organizational structure, personnel competence, facilities, environmental conditions and equipment management.
- Metrological traceability - ensuring measurements are traceable to appropriate standards (Annex A).
- Process requirements - review of requests and contracts, method selection, verification and validation, sampling, handling of test/calibration items, technical records, and evaluation of measurement uncertainty.
- Ensuring validity of results - use of internal quality control, proficiency testing and interlaboratory/intralaboratory comparisons.
- Reporting - requirements for test reports and calibration certificates, statements of conformity, opinions and amendments.
- Nonconforming work & complaints - control and corrective actions.
- Management system options - two flexible options for management systems (Option A: standalone ISO/IEC 17025 system; Option B: alignment with ISO 9001) (Annex B).
- Risk-based thinking - requirement to plan actions addressing risks and opportunities to improve reliability and consistency.
Practical applications and users
ISO/IEC 17025 is used by:
- Testing and calibration laboratories seeking accreditation to demonstrate competence and obtain market/regulatory acceptance.
- Accreditation bodies and peer-assessment schemes evaluating laboratory competence.
- Regulatory authorities and customers** using accredited results for compliance, safety, product release and forensic evidence.
- Manufacturers and service providers relying on calibrated equipment and validated test results.
Practical benefits include improved data quality, reduced repeat testing, international recognition of results, and clearer traceability of measurements.
Related standards
- ISO/IEC Guide 99 (VIM) - metrology vocabulary
- ISO/IEC 17000 - conformity assessment vocabulary and principles
- ISO/IEC 17043 - proficiency testing
- ISO 9001 - quality management (alignment option)
Keywords: ISO/IEC 17025, testing and calibration laboratories, laboratory accreditation, metrological traceability, measurement uncertainty, laboratory competence, impartiality, management system.
