Proficiency Test on O-& P- Xylenes started

The report forms and 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 O-& P- Xylenes iis14C08 the report form and the letter of instructions.

Summary of this proficiency test:

On 24 September 2014 the proficiency test on O-& P- Xylenes started with 35 participants from 20 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, forms for the reporting of the analysis results and the material safety data sheet (MSDS).

The samples have to be analyzed on: Appearance, Colour, Density, Distillation, Organic Chloride, Purity and Sulphur.

The deadline for reporting results is set on 24 October 2014. 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 can also be reported via our internet based "results reporting platform". A login and a password can be requested via email to