|Proficiency Test on
Biogasoline E85 finished
The full report can be downloaded (as .pdf-file). To download the report, please click the right mouse button and choose the "save as" option.
Summary of this proficiency test:
On 9 July 2012, the proficiency test on Biogasoline E85 (iis12B04) was finished. It started on 2 May 2012 (see message “Proficiency Test on Biogasoline E85 started” on this website) when the samples were distributed.
In this interlaboratory study 15 participants in 9 different countries have participated.
The participants were requested to determine Acidity, Methanol, Higher Sat. Mono alcohols, Ethers, Copper, Copper strip 3hrs/50ºC, Density @15ºC, Gum (washed), Oxidation Stability, Ethanol, inorganic Chloride, Oxygen, Sulphur, pHe, Phosphorus and water.
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).