Proficiency Test on Metals in Plastics finished

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Download the report (iis14P05) of this Proficiency Test on Metals in Plastics

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Summary of this proficiency test:

On 31 October 2014, the proficiency test on Metals in Plastics (iis14P05) was finished. It started on 13 August 2014 (see message Proficiency Test on Metals in Plastics started on this website) when the samples were distributed.

In this interlaboratory study 186 participants in 40 different countries have participated.

The participants were requested to determine Antimony, cadmium, cobalt, lead, mercury, chromium and chromium VI.

The proficiency test report summarises per analyt, the test results, the analytical test methods reported by the participants and the z-scores calculated for each participant are tabulated. Also, for each test, the calculated summary (e.g. mean, standard deviation and reproducibility) is given.

In the report also an evaluation of the test results is given. Problems encountered in the analyses are mentioned and - where possible - suggestions for quality improvement are formulated. For each test a comparison is made between the results of the group of participants and the requirements given by the relevant standard (e.g. EN, ISO, ASTM).