General methods of test for pigments and extenders — Part 15: Comparison of resistance to light of coloured pigments of similar types
颜料和扩展剂的一般测试方法 - 第15部分:与类似颜色的着色颜料的光的耐光性的比较
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.