Proficiency Test on Ethanol/gasoline mixtures ASTM D5501 finished

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Download the report (iis13C20) of this Proficiency Test on Ethanol/gasoline mixtures ASTM D5501

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Summary of this proficiency test:

On 14 February 2014, the proficiency test Ethanol/gasoline mixtures ASTM D5501 (iis13C20) was finished.
It started on 30 October 2013 (see message “Proficiency Test on Ethanol/gasoline mixtures ASTM D5501 started” on this website) when the samples were distributed.

In this interlaboratory study 13 participants in 6 different countries have participated.

The 3 samples were tested on ethanol content in %M/M and %V/V.

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).