BS ISO 2470-1:2016规定了蓝色漫反射系数（ISO 纸浆、纸张和纸板的亮度。ISO 2470的这一部分仅限于白色和接近白色的纸浆、纸张和纸板。这个 只能在照明的紫外线能级 已使用荧光参考标准对其进行调整，以与CIE光源C[6]相对应。CIE光源C被视为室内日光条件的代表，因为它包含 适当比例的紫外线辐射。[9] 注:被称为D65亮度的特性是通过调整仪器以符合CIE进行测量的 标准光源D65，[4]，其紫外线含量远高于ISO 2470本部分规定的紫外线含量。ISO 2470-2中描述了D65亮度的测量。[2] 交叉引用:ISO 186ISO 2469ISO 3688ISO 4094ISO 7213ISO 187ISO 2470-2ISO/TR 10688ISO 11664-2:2007ISO/TR 24498CIE 15:2004CIE S017:2011CIE 182:2007购买本文件时提供的所有当前修订均包含在购买本文件中。

BS ISO 2470-1:2016 specifies a method for measuring the diffuse blue reflectance factor (ISO brightness) of pulps, papers and boards.This part of ISO 2470 is limited in its scope to white and near-white pulps, papers and boards. The measurement can only be made in an instrument in which the ultraviolet energy level of the illumination has been adjusted to correspond to the CIE illuminant C[6] using a fluorescent reference standard.The CIE illuminant C is taken to be representative of indoor daylight conditions because it contains a suitable proportion of UV radiation.[9]NOTE The property called D65 brightness is measured with an instrument adjusted to correspond with CIE standard illuminant D65,[4] which has a much higher UV content than that specified in this part of ISO 2470. The measurement of D65 brightness is described in ISO 2470-2.[2]Cross References:ISO 186ISO 2469ISO 3688ISO 4094ISO 7213ISO 187ISO 2470-2ISO/TR 10688ISO 11664-2:2007ISO/TR 24498CIE 15:2004CIE S017:2011CIE 182:2007All current amendments available at time of purchase are included with the purchase of this document.