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Download the report (iis06F01X) of this Proficiency Test on Fuel Oil

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Summary of this proficiency test:

On 31 Mar.'06, the proficiency test Fuel Oil (iis06F01) was finished. It started on 18 Jan.'06 (see message “Proficiency Test on Fuel Oil started” on this website) when the samples were distributed.

In this international interlaboratory study 129 laboratories in 63 different countries have participated. The participants were asked to determine: Bromine number, Kinematic Viscosity, Heat of Combustion (Net and Gross), Sediments by extraction, Sulfur, Flash Point PMcc, Conradson Carbon Residue (CCR), Micro Carbon Residue (MCR), Lower and Upper Pour Point, Water by distillation, Density, Distillation (ASTM D1160), Asphaltenes, Existent dry sludge and Accelerated dry sludge, Vanadium, Silicon, Aluminium, Sodium and Nickel and CHN via the analyzer.

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.