Proficiency Test on Hydraulic Oil (Fresh) started

The letters of instruction can be downloaded here as Word document. To download a document, please click the right mouse button and choose the "save as" option.

Download for the main sample of iis15L06 here: the letter of instructions and the  report form.

Summary of this proficiency test:

On 28 October 2015 the proficiency test on Hydraulic Oil (Fresh) started with 48 participants from 35 different countries.

On that date, the samples were dispatched to the laboratories. Enclosed to the samples were the instructions to the participants for this proficiency test and the material safety data sheet (MSDS).

The samples have to be analyzed on: Total Acid Number, Density @ 15C, Flash Point PMcc,  Kinematic viscosity @ 40C, Kinematic viscosity @ 100C, Copper Corrosion, Foaming Characteristics, Viscosity Index, Viscosity Stabinger at 40C and at 100C, Pour Point Manual/ Automated, Sulphur, Water Separability, Water, Ca, P and Zn.

The deadline for reporting results is set on 27 November 2015. A laboratory that sends in results after deadline will definitely not get direct feedback in case any of its results are suspect! So be in good time to get the most out of this proficiency test.

The test results have to be reported via our internet based "results reporting platform". A login and a password can be requested via email to