Proficiency Test on Base Oil   started

The letter of instructions 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 iis16L02 here: the letter of instructions and the  report form.

Summary of this proficiency test:

On 27 April 2016 the proficiency test on Base Oil started with 51 participants from 33 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 can be analyzed on: Total Acid Number, Density @ 15C, Flash Point PMcc, Kinematic viscosity @ 40C, Kinematic viscosity @ 100C,  Viscosity Index, Pour Point Manual/ Automated, Sulphur, Water Separability, Rust Preventing,Air-Release Time at 50C, Color ASTM, Conradson Carbon Residue, Ramsbottom Carbon Residue, Evaporation loss by Noack test, Viscosity Stabinger at 40C and 100C and Water content by KF.

The deadline for reporting results is set on 3 June 2016. 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