Proficiency Test on Butylacrylate finished

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Download the report (iis12C05) of this Proficiency Test on Butylacrylate

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Summary of this proficiency test:

On 12 July 2012, the proficiency test on Butylacrylate (iis12C05) was finished. It started on 9 May 2012 (see message “Proficiency Test on Butylacrylate started” on this website) when the samples were distributed.

In this international interlaboratory study 16 participants in 15 different countries have participated.

The participants were requested to determine Acidity (free acid as acrylic acid),Appearance, Colour Pt/Co, Density @ 20°C, MEHQ, Water, Purity , Purity on dry basis , n-Butanol, n-Butylacetate, n-Butylmetacrylate, n-Butylpropionate, Di-n-butylether, 2-Ethylhexylacrylate, Isobutylacrylate, Unknown impurities.

The proficiency test report summarises per test, the test results, the analytical methods reported by the participants and the z-scores calculated by i.i.s. 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).

Interested parties can order a hard copy of the report; the price for non-participants is Euro 35.