engleski

8th Proficiency Test: Critical Review

In an inter-laboratory experiment, different laboratories determine some characteristic, e.g. the concentration of an analyte in one or various homogeneous samples under documented conditions. Several subtypes of inter-laboratory studies can be distinguished. Collaborative trials or method performance studies are used to test the performance (generally the precision) of a single analytical method. A standard method, which is routinely used in several laboratories, can also be examined collaboratively to test for a possible bias of either the method (method bias) or the laboratories (laboratory bias) that routinely use it. The comparison of different laboratories that perform comparable analyses with their own individual method is often called proficiency testing or laboratory performance studies ; sometimes, the term “ round robin study” is used. It is an essential part of the requirements for laboratory accreditation and the participating laboratories have to prove their technical competence regularly. In proficiency testing, the defined test schemes are organized individually for the analysis of a certain analyte (or a group of analytes) in a certain matrix. All proficiency testing schemes are run regularly, but each scheme has its own frequency of test rounds.

proficiency test; ion chromatography

nije evidentirano