Proficiency Test on Azo Dyes in Leather started

The letter 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 the instuctions for iis16A02 here: The letter of instructions and the report form.

Summary of this proficiency test:

On 10 February 2016 the proficiency test on  Azo Dyes in Leather  started with 106 participants from 29 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.

The samples can be analyzed on: 24 forbidden aromatic amines

The deadline for reporting results is set on 18 March 2016. A laboratory that reports test 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 should be reported via our internet based results reporting platform. A login and a password can be requested via email to