1.1 本规程涵盖了获得精确光谱数据以计算物体颜色所需的仪器测量要求、校准程序和材料标准。 1.2 本规程列出了特定方法、规程或规范中要求进行光谱测量时必须指定的参数。 1.3 该实践的大部分部分适用于光谱仪和分光光度计，前者可以产生光谱数据作为输出，后者原理相似，但只能产生比色数据作为输出。注意到这种适用性的例外情况。 1.4 这种实践在范围上局限于仅使用单个单色仪的光谱仪和分光光度计。这种做法对于要进行颜色表征的材料是通用的。 1.5 以国际单位制表示的数值应视为标准。本标准不包括其他计量单位。 1.6 本标准并不旨在解决与其使用相关的所有安全问题（如有）。本标准的使用者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。 1.7 本国际标准是根据世界贸易组织技术性贸易壁垒委员会发布的《关于制定国际标准、指南和建议的原则的决定》中确立的国际公认的标准化原则制定的。 ====意义和用途====== 5.1 获得CIE三刺激值的最通用和可靠的方法，或者通过对其进行转换，获得描述物体颜色的其他坐标，是通过使用光谱数据。色度数据是通过将物体光谱数据与表示CIE标准观测者和CIE标准光源的数据相结合来获得的，如实践中所述 E308 。 5.2 该实践提供了用于选择用于提供所需精度的数据的光谱仪的操作参数的程序。它还提供了通过材料标准进行仪器校准，以及选择合适的样本以获得测量精度。

1.1 This practice covers the instrumental measurement requirements, calibration procedures, and material standards needed to obtain precise spectral data for computing the colors of objects. 1.2 This practice lists the parameters that must be specified when spectrometric measurements are required in specific methods, practices, or specifications. 1.3 Most sections of this practice apply to both spectrometers, which can produce spectral data as output, and spectrocolorimeters, which are similar in principle but can produce only colorimetric data as output. Exceptions to this applicability are noted. 1.4 This practice is limited in scope to spectrometers and spectrocolorimeters that employ only a single monochromator. This practice is general as to the materials to be characterized for color. 1.5 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.6 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. 1.7 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 general and reliable methods for obtaining CIE tristimulus values or, through transformation of them, other coordinates for describing the colors of objects are by the use of spectrometric data. Colorimetric data are obtained by combining object spectral data with data representing a CIE standard observer and a CIE standard illuminant, as described in Practice E308 . 5.2 This practice provides procedures for selecting the operating parameters of spectrometers used for providing data of the desired precision. It also provides for instrument calibration by means of material standards, and for selection of suitable specimens for obtaining precision in the measurements.