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Testing - Proficiency Testing Introduction

A proficiency test (PT) is simply, a method that you may use to validate a particular measurement process.

The artifact’s reference value is not known by the participating laboratory at the time of its measurement (test). In a well designed proficiency test, the reference value for the artifact should be principally determined by a competent laboratory with appropriate traceability to the International System of Units (SI). The reference laboratory should also have demonstrated its competency though key comparisons, interlaboratory comparisons, or proficiency tests appropriate to validate their measurement capability. It is also preferable that the laboratory has had its competency independently assessed through the process of laboratory accreditation. Lastly, in order to appropriately validate the measurement capability of the participating laboratory, the uncertainty assigned to the artifact by the reference laboratory should be sufficiently smaller than the expanded uncertainty reported by the participating laboratory.

Whether you are meeting your accreditation requirements or working to improve your performance, participation in proficiency testing is a valuable continuous improvement tool. We can help you gain insight into your measurement processes that translates into improved performance and enhanced measurement quality.

At the SABS, we provide our clients with an unbiased analysis of measurement processes to enhance awareness of their technical competence and data integrity. All our programs are conducted in accordance with current quality guidelines and standards.