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）的分光光度计对物体颜色样本的透射特性和颜色进行仪器测量。 1.2 该试验方法通常适用于所有全透明试样，不考虑试样相对于仪器传输端口的位置。然而，半透明试样必须与球体的传输端口齐平。 1.3 以国际单位制表示的数值应视为标准值。本标准不包括其他计量单位。 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====== 5.1 获得物体颜色颜色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透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以下类型试样的测量（另见指南 E179 和实践 E805 ): 5.2.1 全透明试样（无浑浊、混浊或半透明），以及 5.2.2 半透明或朦胧样品，前提是样品可以与积分球的传输端口平齐放置。 5.3 不建议将本试验方法用于测量反光透明或半透明样品或荧光样品。

1.1 This test method describes the instrumental measurement of the transmission properties and color of object-color specimens by the use of a spectrophotometer or spectrocolorimeter with a hemispherical optical measuring system, such as an integrating sphere. 1.2 This test method is generally suitable for all fully transparent specimens without regard for the specimen position relative to the transmission port of the instrument. Translucent specimens, however, must be placed flush against the transmission port of the sphere. 1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 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 ====== 5.1 The most direct and accessible methods for obtaining the color coordinates of object colors 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 transmittance spectrophotometry using a hemispherical optical measuring system. 5.2 This test method is especially suitable for measurement of the following types of specimens (see also Guide E179 and Practice E805 ): 5.2.1 Fully transparent specimens (free from turbidity, haze, or translucency), and 5.2.2 Translucent or hazy specimens, provided that the specimen can be placed flush against the transmission port of the integrating sphere. 5.3 This test method is not recommended for measurement of retroreflective transparent or translucent specimens, or samples that are fluorescent.