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Download the report (iis12P04) of this Proficiency Test on perfluoro octanoicacid (PFOA/PFOS)

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Summary of this proficiency test:

On 29 October 2012, the proficiency test on PFOA/PFOS (iis12P04) was finished. It started on 15 August 2012 (see message "Proficiency Test on PFOA/PFOS started" on this website) when the samples were distributed.

In this interlaboratory study 28 participants in 13 different countries have participated.

The participants were requested to determine both PFOA and PFOS in the two samples.

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. For each test a comparison is made between the results of the group of participants and the requirements given by the relevant standard.