CEN - EN ISO 3668
Paints and varnishes - Visual comparison of colour of paints
|Publication Date:||1 February 2020|
|ICS Code (Paints and varnishes):||87.040|
This document specifies a method for the visual comparison of the colour of films of paints or related products against a standard (either a reference standard or a freshly prepared standard) using artificial light sources in a standard booth.
It is not applicable to coatings containing special-effect pigments, e.g. metallic, without previous agreement on all details of illuminating and viewing conditions