The standards for testing the colour fastness of coloured papers (EN 646:2019-02) and optically brightened papers (EN 648:2019-02) were published on 1 February 2019 and became effective immediately.
In consequence, the previously valid standards DIN EN 646:2006-07 and DIN 648:2006-12 as well as the drafts DIN EN 646:2017-03 and DIN 648:2017-03 were withdrawn.
A new definition has been added for the glass fibre paper used in analysis. This has led to greater safety in analysis. Previously, the nature of the paper had not been precisely defined.
Our experts for consumer products test both the colour fastness of coloured papers according to the new requirements of EN 646:2019-02 and the fastness of optically brightened papers according to EN 648:2019-02.