标准编号：ISO 5631-3:2014
中文名称：纸和纸板 漫反射法测定颜色 第3部分：室内照明条件下（D50/2°）
英文名称：Paper and board — Determination of colour by diffuse reflectance — Part 3: Indoor illumination conditions (D50/2 degrees)
发布日期：2014-07
标准范围
This part of ISO 5631 specifies a method for measuring the colour of paper and board by the diffusereflectance method with the elimination of specular gloss.This part of ISO 5631 is primarily intended for measuring the colour of paper and board to be usedin the graphic arts industry, where that industry specifies the measurement of colour under D50/2°conditions in accordance with ISO 13655. This method differs from ISO 13655, in that, the UV content ofthe illumination is adjusted to a different level.The method can be used to determine the colour of papers or boards that contain fluorescent whiteningagents, provided the UV content of the illumination on the test piece has been adjusted to conform to thatin the CIE illuminant C, using a fluorescent reference standard provided by an authorized laboratory, asdescribed in ISO 2470?1.This part of ISO 5631 is not applicable to coloured papers or boards that incorporate fluorescent dyesor pigments.
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