本评估程序描述了使用标准深度标尺测定染料 为了色牢度评估，产生视觉上相同深度的染料所需的浓度。着色剂可能具有不同的着色强度，因此它们的等浓度染色可能会在产生的颜色深度和色牢度特性上显著不同。使用能够提供视觉上相等深度的着色剂浓度将提供更具可比性的评估。

This evaluation procedure describes the use of the standard depth scales for the determination of the dye concentration required to produce dyeings of visually equal depth for the purpose of colorfastness evaluations. Colorants may have different tinctorial strengths whereby equal concentration dyeings of them may differ markedly in the resulting color depth and colorfastness properties. Using concentrations of colorants which will give visually equal depths will provide a more comparable evaluation.