The importance of being fit for purpose

VaMPIS - Validation of Measurement Procedures that Include Sampling 1. Introduction Validation of analytical methods (i.e. procedures) usually excludes the primary sampling, but this is now widely recognised as the first step in the measurement procedure [1] (Fig.1). Validation of…

Proficiency testing – How much and how often? Introduction A laboratory should have a strategy for its participation in proficiency testing (PT) detailing which schemes it should enrol in (level) and how often (frequency). This is explained in a Eurachem…

Selecting the right proficiency testing scheme for my laboratory Introduction Participation in Proficiency Testing (PT) is an important part of assuring the quality of test results in a laboratory. The time and effort required can be costly, especially for laboratories…

Use of surplus proficiency test items Introduction Test items are sometimes available from proficiency testing (PT) providers after the completion of a PT round. The purpose of this information leaflet is to advise laboratories on benefits and limitations of surplus…