Proficiency Test on Biogasoline E10 finished

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Download the report (iis10B02) of this Proficiency Test on Biogasoline E10 incl. DVPE.

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Summary of this proficiency test:

On 1 July 2010, the proficiency test on Biogasoline E10 (iis10B02) was finished. It started on 28 April 2010 (see message “Proficiency Test on Biogasoline E10 started” on this website) when the samples were distributed.

In this international interlaboratory study 35 participants in 18 different countries have participated.

The participants were requested to determine Aromatics, API Gravity, Benzene, Copper strip 3hrs/50ºC, Density @15ºC, Gum (washed), Distillation @ 760 mmHg ,Doctor test, Mercaptans, Olefins, Pb, Mn, S, Oxidation Stability, Oxygen, Ethanol, Sulphur, RON, MON and DVPE.

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.