1.1本试验方法描述了相对于相同化学类型的标准漆或参考漆，测定色度试验漆的吸收着色强度。该程序基于用标准混合白色涂料稀释涂料，然后进行仪器测量和计算。规定用于校正试验色漆和参考色漆之间色调或色度或两者之间的微小差异。 1.2本试验方法旨在比较含有相同类型载体（丙烯酸、醇酸或油）的油漆和具有相同颜色索引名称和编号的单一颜料着色剂。颜料和油漆其他成分的量不需要知道。 1.3以国际单位制表示的数值应视为标准。括号中给出的值仅供参考。 1.4 本标准并非旨在解决与其使用相关的所有安全问题（如有）。 本标准的用户有责任在使用前制定适当的安全和健康实践，并确定监管限制的适用性。 ====意义和用途====== 着色强度可能是判断涂料相对经济价值的一个因素，因为颜料浓度在很大程度上决定了强度；其他因素包括研磨中的配方和颜色发展。用户还可以选择具有不同着色强度的其他特性的产品，例如透明度。本试验方法的结果可用于生产控制或质量比较。 着色强度最大或最小的产品可能不是特定艺术用途最理想的产品。例如，着色强度低可能导致需要使用过高的颜料浓度来获得所需的颜色效果，这可能导致干漆膜中存在缺陷。 本试验方法仅适用于单一颜料涂料。本试验方法无法评估含有两种或两种以上光学性能不同的彩色颜料的涂料的着色强度。 术语 “ 类似化学类型 ” 1.1中使用的成分并不限制涂料中的成分，而是指车辆的相容性和颜料类型的相似性。 虽然描述了着色强度的仪器评估，但也可以使用视觉比较，精度较低，并且应进行视觉比较，以确认仪器和计算结果。 如果以相同的色漆与白漆比例制备的样品和标准品在外观上有很大差异，则应制备另一个样品，使两者在外观上更接近，以获得最准确的结果。 混合的彩色涂料和白色涂料的数量必须以重量或体积为基础准确地知道，但彩色涂料中颜料的浓度不需要知道。 当所比较的油漆具有相同的载体和颜料（相同的颜色指数名称和编号）时，9.1中的未校正着色强度值和9.2中的校正着色强度值应几乎相同。如果不是，则建议将两种着色强度的平均值作为真实值的最佳估计值，并且范围提供了不确定性大小的度量，这是由于油漆之间的色调或色度差异或两者的差异引起的。 严格来说，本试验方法的Kubelka-Munk类型分析不应适用于所用的三色激励滤波器读数，而应仅适用于光谱数据。然而，为了对本试验方法进行相对比较，所用计算引入的误差在一定程度上抵消了。

1.1 This test method describes the determination of the absorption tinting strength of a chromatic test paint relative to that of a standard or reference paint of the same chemical type. The procedures are based on dilution of the paints with a standard mixing white paint, followed by instrumental measurement and calculation. Provision is made for correcting the results for small differences in hue or chroma, or both, between the test and reference chromatic paints. 1.2 This test method is intended for the comparison of paints containing the same type of vehicle (acrylic, alkyd, or oil) and single-pigment colorants of the same Colour Index name and number. The amounts of the pigment and of the other components of the paint need not be known. 1.3 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only. 1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. ====== Significance And Use ====== Tinting strength may be one factor in judging the relative economic value of paints, since pigment concentration contributes to strength in a major way; other factors are formulation and color development in grinding. The user may also select products for other properties, such as transparency, that are accompanied by different tinting strengths. The results of this test method may be used for production control or quality comparisons. The product with the greatest or the least tinting strength may not be the most desirable for a given artistic use. For example, low tinting strength may lead to the need to use an excessively high pigment concentration to obtain a desired color effect, and this may lead to defects in the dry paint film. This test method applies only to single-pigment paints. The tinting strength of paints that contain two or more chromatic pigments with different optical properties cannot be evaluated by this test method. The term “ similar chemical type ” used in 1.1 does not limit the ingredients in the paints to identity, but refers to compatibility in the case of vehicles and to similarity in the case of pigment types. While the instrumental evaluation of tinting strength is described, visual comparisons can also be used, with lower precision, and should be made to provide confirmation of the instrumental and computational results. If the sample and standard are widely different in appearance when prepared at the same ratio of chromatic to white paint, another sample should be prepared to bring the two closer in appearance, to obtain the most accurate results. The quantities of chromatic and white paints mixed must be accurately known, on either a weight or a volume basis, but the concentration of pigment in the chromatic paint need not be known. When the paints being compared have the same vehicle and pigment (same Colour Index name and number) the values of uncorrected tinting strength from 9.1 and corrected tinting strength from 9.2 should be nearly the same. If they are not, an average of the two tinting strengths is recommended as the best estimate of the true value, and a range provides a measure of the magnitude of the uncertainty, which is due to differences in hue or chroma, or both, between the paints. Strictly speaking, the Kubelka-Munk-type analysis of this test method should not be applied to the tristimulus filter readings used, but only to spectral data. For the purposes of the relative comparisons of this test method, however, the errors introduced by the calculations used cancel to an adequate degree.