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2018 Proficiency Test (PT) on Colorants (Banned dyes) in Textile 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.


 Please download the instructions for the PT iis18A05 here: the letter of instructions



Summary of this proficiency test:


On 7 March 2018 the proficiency test on Colorants (Banned dyes) in Textile started with 91 participants from 24 different countries. On that date, the samples were dispatched to the laboratories.

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: Disperse Blue 1, 3, 7, 26, 35, 35a, 35b, 102, 106, 124, Disperse Brown 1, Disperse Orange 1, 3, 76=37, Disperse Red 1, 11, 17 and Disperse Yellow 1, 3, 9, 39, 49, Acid Red 26, Basic Blue 26, Basic Red 9, Basic Violet 3, 14, Direct Black 38, Direct Blue 6 and Direct Red 28, Disperse Blue 1, Disperse Orange 11, Disperse Yellow 3, Disperse Orange 149, Disperse Yellow 23, Basic Green 4 (oxalate), Basic Green 4 (chloride), Basic Green 4 (free) and Navy Blue.


The deadline for reporting results is set on 13 April 2018. 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





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