|Proficiency Test on
Gear Oil (Used) 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 22 June 2017, the proficiency test on Gear Oil (Used) (iis17L02) was finished. It started on 15 March 2017 (see message "Proficiency Test on Gear Oil (Used) started" on this website) when the samples were distributed.
In this interlaboratory study 16 participants in 12 different countries have participated.
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. EN, ISO, DIN, ASTM).