GB/T 5211.16-2007 in English

《GB/T 5211.16-2007白色颜料消色力的比较》由TC5（全国涂料和颜料标准化技术委员会）归口，主管部门为中国石油和化学工业联合会。
本部分规定了比较白色颜色与同类型商定颜料清色能力的通用试验方法。
标准中描述了两个方法（A和B），方法A比方法B快，适用单个颜料样品的试验；对于样品的试验，方法B更好些，特别是对于未知消色力的颜料样品。

Scope

This standard specifies a general test method for comparing the decolorization ability of white pigments with agreed pigments of the same type. Two methods (A and B) are described in the standard. Method A is faster than method B and is suitable for the test of a single pigment sample; for the test of multiple samples, method B is better, especially for pigment samples with unknown decolorizing power. Note: When this general method is applicable to a specified pigment, the method should be indicated in the product standard for that pigment, and any detailed changes required due to the characteristics of the pigment should be noted. A specific method is prescribed for comparing the decolorizing power of white pigments only when this general method is not applicable to a particular pigment.