Proficiency Test on Toluene started

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

Download the instuctions for iis17C05 here: The letter of instructions and the  report form.

Summary of this proficiency test:

On 15 February 2017 the proficiency test on Toluene started with 42 participants from 22 different countries.

On that date, the samples were dispatched to the laboratories. Enclosed to the samples were the material safety data sheet (MSDS).

Please confirm sample receipt as soon as you have received and checked the contents of the sample package via Please enter the date of receipt and press the "save date" button.

The samples can be analyzed on: Acid wash color, Appearance, Color, Copper Corrosion, Density @ 20°C, Distillation, Purity, Benzene, Nonaromatics and Refractive Index @ 25°C.

The deadline for reporting results is set on 24 March 2017. A laboratory that reports test results after the 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 should be reported via our internet based results reporting platform. A login and a password can be requested via email to