Overview
EN ISO/IEC 17025:2017 (ISO/IEC 17025:2017) specifies the general requirements for the competence, impartiality and consistent operation of testing and calibration laboratories. Endorsed by CEN as EN ISO/IEC 17025:2017, this international standard applies to all organizations performing laboratory activities, regardless of size. It is the primary benchmark used by laboratory customers, accreditation bodies, regulatory authorities and peer-assessment schemes to confirm or recognize laboratory competence.
Key Topics
The standard addresses both technical and management requirements to ensure valid results and reliable laboratory operation. Major topics include:
- General requirements: impartiality, confidentiality and organization.
- Structural and resource requirements: personnel competence, facilities, environmental conditions and equipment.
- Metrological traceability: ensuring measurements are traceable to national or international standards.
- Methods and validation: selection, verification and validation of test and calibration methods.
- Sampling, handling and technical records: control of test items and retention of evidence.
- Measurement uncertainty: evaluation and reporting of uncertainty associated with results.
- Reporting: common requirements for test reports, calibration certificates and statements of conformity.
- Process controls: complaints, nonconforming work, corrective actions and data management.
- Management system options: flexibility in documenting and operating a quality/management system (options noted in the standard), aligned with risk-based thinking and compatible with ISO 9001 principles.
Keywords: ISO/IEC 17025:2017, EN ISO/IEC 17025, laboratory competence, measurement uncertainty, metrological traceability, method validation.
Applications
ISO/IEC 17025:2017 is used to:
- Achieve or maintain laboratory accreditation and demonstrate technical competence.
- Support procurement decisions by verifying laboratory capability for specific tests or calibrations.
- Satisfy regulatory and contractual requirements for reliable measurement results.
- Improve laboratory practices: measurement uncertainty assessment, equipment calibration, method validation, data integrity and reporting.
- Facilitate international recognition of test and calibration results.
Typical users include testing and calibration laboratories across sectors such as environmental testing, food and beverage, manufacturing and materials testing, research and development, and conformity assessment bodies.
Related standards
- ISO 9001 - the standard notes alignment with ISO 9001 principles for management systems.
- ISO/CASCO guidance - developed under the Committee on Conformity Assessment (CASCO).
EN ISO/IEC 17025:2017 remains the authoritative reference for laboratories seeking to demonstrate reliable technical performance and to build stakeholder confidence in test and calibration results.