VDI 4221 Blatt 1:2014-04

This standard specifies requirements on the competence of providers of interlaboratory tests in the field of immission control. It substantiates the requirements made in DIN EN ISO/IEC 17043. The requirements apply to providers of interlaboratory tests used for the demonstration of competence and performance of bodies for an accreditation and a notification as well as for the associated quality checks or for the validation and verification of measurement methods. Together with DIN EN ISO/IEC 17043 this standard forms the basis in accreditation procedures for the demonstration of the competence of providers of interlaboratory tests in the field of immission control.