TS EN ISO/IEC 17043

TS EN ISO/IEC 17043 is a general conformity assessment standard used to evaluate the competence and impartiality of proficiency testing providers. Proficiency testing is based on comparing participant performance under a defined scheme, so the provider’s organization, scheme design, and consistent handling of results are central to the value of the exercise.

The provider’s role in a proficiency testing scheme

This standard addresses the general competence requirements for organizations that plan and manage proficiency testing schemes. In practical technical terms, the goal is to support schemes that are technically credible, impartial, and operated in a consistent manner. More broadly, proficiency testing works by having participants produce results on a predefined item, sample, or scenario, then comparing those results with other participants or with an established performance expectation.

Where this document is used

• Provides a basis for comparative performance evaluation in proficiency testing schemes.
• Can be used by regulatory authorities and accreditation bodies when confirming provider competence.
• Offers a common technical framework for organizations using peer assessment.
• Can serve as a foundation for more detailed technical requirements in specific fields of application.

The standard focuses on the consistent operation of proficiency testing schemes as a whole rather than directly prescribing a test method for individual products or laboratories. Its references to ISO/IEC 17000, ISO/IEC 17025, ISO 17034, and ISO/IEC Guide 99 reflect its close connection with concepts such as measurement, uncertainty, competence, and comparability.