1.1 本试验方法描述了通过目视评估蓝色来确定白色颜料相对着色强度的程序。 1.2 本试验方法仅适用于将试验颜料与相同类型和等级的参考标准进行比较。 注1: 试验方法 D2745 描述了黑色样品的仪器评估程序。 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、健康和环境实践，并确定监管限制的适用性。 1.5 本国际标准是根据世界贸易组织技术性贸易壁垒（TBT）委员会发布的《关于制定国际标准、指南和建议的原则的决定》中确立的国际公认标准化原则制定的。 ====意义和用途====== 4.1 本试验方法用作参考方法和质量控制。规定了用于制备分散体和着色剂（群青蓝）的溶剂（油），但也可以使用其他溶剂和着色剂。测试方法的任何此类变更必须经买方和卖方同意。 4.2 使用研磨机获得的结果不一定符合存在不同分散条件的工业情况。然而，用研磨机分散是一种快速且相对廉价的测试着色强度的方法，用于常规质量控制。

1.1 This test method describes the procedure for determining the relative tinting strength of white pigments by visual assessment of blue tints. 1.2 This test method is applicable only for comparing the test pigment with a reference standard of the same type and grade. Note 1: Test Method D2745 describes a procedure for instrumental evaluation of black tinted samples. 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee. ====== Significance And Use ====== 4.1 This test method is used as a referee method and for quality control. The vehicle (oil) for preparing the dispersions and the tinting pigment (ultramarine blue) are specified but other vehicles and tinting pigments can be used. Any such changes in the test method must be agreed upon between the purchaser and the seller. 4.2 The results obtained with a muller do not necessarily agree with an industrial situation where different dispersing conditions exist. However, dispersing with a muller is a fast and relatively inexpensive way of testing tinting strength for routine quality control.