|Proficiency Test on Gasoil 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 16 May 2013, the proficiency test on Gasoil (iis13G01EN) was finished. It started on 6 March 2013 (see message "Proficiency Test on Gasoil started" on this website) when the samples were distributed.
In this interlaboratory study 139 laboratories from 57 countries have participated.
The participants were requested to determine Ash content, aromatics , Cetane Index, Carbon residue, Cloud Point, CFPP, copper corrosion, Density @ 15°C,Flash Point PMcc, FAME content, Kinematic viscosity @40°C, Lubricity by HFRR, Nitrogen, Oxidation Stability, PAH, pour point, Sulphur content, Total acid number, Water content, total contamination and Distillation at 760 mmHg.
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, EN, ASTM).