General methods of test for pigments and extenders - Part 15: Comparison of resistance to light of coloured pigments of similar types
STANDARD published on 1.3.2020
Designation standards: ČSN EN ISO 787-15
Classification mark: 670520
Catalog number: 508969
Publication date standards: 1.3.2020
The number of pages: 20
Approximate weight : 60 g (0.13 lbs)
Country: Czech technical standard
Category: Technical standards ČSN
This document describes a general method of test for comparing the resistance to light of samples of similar types of coloured pigments (agreed reference pigment and test sample).
Two methods of exposure are described in this document. In method A, the material is exposed under glass to natural light. In method B, the material is exposed to direct artificial light