1.1 本试验方法描述了使用分光光度计或带有半球形光学测量系统（如积分球）的分光光度计对陶瓷釉料和其他白色器皿的反射特性和颜色进行仪器测量。 1.2 本试验方法适用于外部平坦表面足以覆盖分光光度计样品口的大多数样品。 1.3 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。 1.4 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====== 5.1 获得陶瓷釉料和相关白色器皿颜色坐标的最直接和最容易的方法是使用分光光度计或色度计以及半球形或双向光学测量系统进行仪器测量。 本试验方法提供了使用半球形光学测量系统通过反射分光光度法进行此类测量的程序。 5.2 本试验方法特别适用于测量以下类型的指定用途的试样（见实践 E805 ). 5.2.1 所有类型的陶瓷釉料和相关的白色器皿样本，以获取用于计算机着色剂配方的数据。 5.2.2 用于颜色评估的陶瓷釉料和相关白瓷样品。 5.2.2.1 对于平面高光泽试样的测量，测量过程中通常应排除镜面反射成分。 5.2.2.2 对于平面中等光泽（缎纹）试样的测量，其中第一个表面反射分量可能分布在广泛的角度范围内，可以在包括镜面反射分量的情况下进行测量，但产生的颜色坐标可能与颜色的视觉判断没有最佳关联。排除镜面反射的测量可能会导致更好的相关性。 5.2.2.3 对于平面、低光泽（哑光）试样的测量，可排除或包括镜面反射成分，因为结果中应无明显差异。 5.3 可以通过测量反射（包括和排除反射的镜面反射分量），然后计算在可见光谱的几个波长上两个测量值之间的差来获得光泽度估计值，如中所述 10.2 .

1.1 This test method describes the instrumental measurement of the reflection properties and color of ceramic glazes and other whitewares by the use of a spectrophotometer or spectrocolorimeter with a hemispherical optical measuring system, such as an integrating sphere. 1.2 The test method is suitable for use with most specimens having an exterior flat surface large enough to cover the spectrophotometer sample port. 1.3 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. 1.4 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 ====== 5.1 The most direct and accessible methods for obtaining the color coordinates of ceramic glazes and related whitewares are by instrumental measurement using spectrophotometers or colorimeters with either hemispherical or bidirectional optical measuring systems. This test method provides procedures for such measurement by reflectance spectrophotometry using a hemispherical optical measuring system. 5.2 This test method is especially suitable for measurement of the following types of specimens for the indicated uses (see Practice E805 ). 5.2.1 All types of ceramic glaze and related whiteware specimens to obtain data for use in computer colorant formulation. 5.2.2 Ceramic glaze and related whiteware specimens for color assessment. 5.2.2.1 For the measurement of plane-surface high-gloss specimens, the specular component should generally be excluded during the measurement. 5.2.2.2 For the measurement of plane-surface intermediate-gloss (satin) specimens, where the first-surface reflection component may be distributed over a wide range of angles, measurement may be made with the specular component included, but the resulting color coordinates may not correlate best with visual judgments of the color. Measurement with specular excluded may lead to better correlations. 5.2.2.3 For the measurement of plane-surface, low-gloss (matte) specimens, the specular component may either be excluded or included, as no significant difference in the results should be apparent. 5.3 An estimate of gloss may be obtained by measuring the reflection both with the specular component of reflection included and excluded, and then calculating the difference between the two measurements at several wavelengths across the visible spectrum, as described in 10.2 .