纺织品 色牢度试验 第A02部分:评定变色用灰色样卡

[中文适用范围]： 描述了色牢度测试中确定纺织品颜色变化的灰度级及其用途。 精确的色度规格作为永久记录，可以与新制定的工作标准和可能已更改的标准进行比较。 基本尺度（5 个步骤）由成对的无光泽灰色色片（或灰布样本）组成。 此外，增强音阶包括四个半音，即 9 个音阶。 [外文原描述]： Describes the grey scale for determining changes in colour of textiles in colour fastness tests, and its use. A precise colorimetric specification of the scale is given as a permanent record against which newly prepared working standards and standards that may have changed can be compared. The essential scale (5 steps) consists of pairs of non-glossy grey colour chips (or swatches of grey cloth). In addition, an augmented scale includes four half-steps and, thus, 9 steps.