Proficiency Test on Bitumen  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 iis15F02 here: the letter of instructions and the  report form.

Summary of this proficiency test:

On 25 November 2015 the proficiency test on Bitumen started with 36 participants from 22 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: Density at 25C Dynamic Shear Rheometer Dynamic Viscosity at 60C Flash Point, COC Fraass breaking point Kinematic Viscosity at 135C Penetration at 25C Penetration Index RTFOT at 163C Softening Point (Ring&Ball) Solubility in Xylene

The deadline for reporting results is set on 25 December 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