Proficiency Test on Acetone finished

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Download the report (iis11C07) of this Proficiency Test on Acetone

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Summary of this proficiency test:

On 28 October 2011, the proficiency test Acetone (iis11C07) was finished. It started on 24 Augustus 2011 (see message “Proficiency Test on Acetone started” on this website) when the samples were distributed.

In this interlaboratory study 21 participants in 15 different countries have participated.

The samples were analyzed on: Acidity, Aldehydes, Appearance, Chloride, Colour, Density, Distillation, Water Miscibility, Nonvolatile matter, Purity, Purity on dry basis, Diacetonalcohol, Mesityloxide, Methanol, Permanganate time test, Refractive index and Water 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. 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).