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ISO 17025 and Accreditation

ISO/IEC 17025 is a conformity assessment standard published by the International Organization for Standardization and the International Electrotechnical Commission. "ISO 17025", for brevity, is also the basis of the US national standard ANSI/NCSL Z540.3 and defines requirements for the technical competence of calibration and testing laboratories. Like the widely recognized ISO 9001, it has criteria for the quality management system but has much more focus and prescriptive requirements on technical aspects of the service including staff qualifications and skills, availability and use of suitable equipment, calibration certificate content, measurement traceability and uncertainty analysis.

Reporting the uncertainty qualifies the accuracy of the measurement and aids understanding when results from different labs are compared. The ratio of specification to calibration uncertainty is one way that equipment users gauge their confidence in a calibration and an instrument’s performance.

ISO 17025 is the most important standard relating to test equipment calibration and has been adopted by conformity assessment bodies as a basis for laboratory accreditation. A growing number of companies require conformity and some industries have incorporated its requirements into sector-specific standards, such as ISO/TS 16949 which is prevalent in the automotive supply chain.

Keysight Technologies is committed to meeting this international standard and is upgrading processes and expanding capabilities to satisfy demand. Over 30 manufacturing and service locations have been independently accredited by bodies such as ACLASS in the Americas and UKAS in Europe. Furthermore, all our calibration facilities are subject to internal audits for 17025-conformity.

Find details about Keysight’s accredited service locations.