1 PTA proficiency testing for metal testing laboratories

Proficiency testing is used internationally to provide objective evidence of testing laboratories testing competence. This paper details the types of proficiency testing techniques used by Proficiency Testing Australia (PTA) for metal testing programs and explores the basic principles behind sample selection and program design to achieve an effective outcome. It also covers the analysis of results and the remedial and corrective actions necessary where problems are highlighted by a proficiency test. Proficiency testing provides objective evidence of testing laboratories ’ competence and complements the on-site assessment process. The effectiveness of such proficiency tests requires careful sample selection and preparation, program design, evaluation of results and where necessary, appropriate follow-up action to be taken