Proficiency Tests on Jet Fuel A1 finished

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Download the report (iis15J01) of the Proficiency Tests on Jet Fuel A1

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Summary of this proficiency test:

On 29 May 2015, the proficiency tests on Jet Fuel A1 (iis15J01) was finished. They started 25 February 2015 (see message "Proficiency Test on Jet Fuel A1 started" on this website) when the samples were distributed.

In this interlaboratory study 108 laboratories in 49 countries have participated.

The participants were requested to determine on Aromatics by FIA, Aromatics by HPLC, Colour Saybolt, Density @ 15°C, Distillation (IBP, 10% recovered , 50% recovered, 90% recovered, FBP)Existent gum, Freezing Point, Mercaptan, Particle Size, sulphur, Smoke Point, Specific Energy, Total acidity, Total Sulphur, Naphthalenes, MSEP, Flash Point, JFTOT,and Viscosity @ -20°C

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, ASTM).