Proficiency Test on Hydraulic Oil 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.

Download the report (iis13L04) of this Proficiency Test on used Hydraulic Oil

For viewing the report you will need Adobe Acrobat Reader getacro.gif (712 bytes)

 

Summary of this proficiency test:

On 20 December 2013, the proficiency test on used Hydraulic Oil (iis13L04) was finished. It started on 23 October 2013 (see message "Proficiency Test on Hydraulic Oil started" on this website) when the samples were distributed.

In this interlaboratory study 45 participants in 32 different countries have participated.

The participants were requested to determine Total Acid Number, Density @ 15°C, Flash Point PMcc, Kinematic viscosity @ 40°C, Kinematic viscosity @ 100°C, Water, Al, Ba, Cr, Cu, Fe, Pb, Li, Mg, Mn, Mo, Ni, Na, Si, Ag, Sn, Ti, V, Ca, P and Zn.

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).