Proficiency Test on Lead in Paint finished

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Download the report (iis12V01) of this Proficiency Test on Lead in Paint

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Summary of this proficiency test:

On 27 April 2012, the proficiency test Total Lead in Paint (iis12V01) was finished. It started on 16 February 2012 (see message “Proficiency Test on Lead in Paint started” on this website) when the samples were distributed.

In this interlaboratory study 112 laboratories in 33 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 by iis 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. ISO, DIN, ASTM).