Proficiency Test on Lead in Paint finished

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Download the report (iis15V01) of this Proficiency Test on Lead in Paint

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Summary of this proficiency test:

On 6 July 2015, the proficiency test Total Lead in Paint (iis15V01) was finished. It started on 8 April 2015 (see message "Proficiency Test on Lead in Paint started" on this website) when the samples were distributed.

In this interlaboratory study 148 laboratories in 34 different countries have participated.

The participants were asked to analyze the samples on Total Lead content.

The proficiency test report summarises per test, the test results, the analytical 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.