This document specifies general requirements for the competence and impartiality of proficiency
testing (PT) providers and consistent operation of all proficiency testing schemes. This document can
be used as a basis for specific technical requirements for particular fields of application.
Users of proficiency testing schemes, regulatory authorities, organizations and schemes using peerassessment,
accreditation bodies and others can use these requirements in confirming or recognizing
the competence of proficiency testing providers.