Proficiency Test on Azo dyes in Textile finished

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Download the report (iis12A01T) of this Proficiency Test on Azo dyes in textile

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Summary of this proficiency test:

On 6 June 2012, the proficiency test on Azo dyes in Textile (iis12A01T) was finished. It started on 7 March 2012 (see message “Proficiency Test on Azo dyes in Textile started” on this website) when the samples were distributed.

In this interlaboratory study 143 laboratories in 34 different countries have participated.

The participants were asked to analyze the samples on 24 aromatic amines

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 (e.g. ISO, DIN, EN).