纸、纸板和纸浆

[中文适用范围]： 本文件描述了测量所有类型的纸浆、纸张和纸板的漫射辐射因子的一般程序。更具体地说，它详细说明了用于校准设备的程序，并在附件 A 中规定了用于此类测量的设备的特性。本文件可用于测量含有荧光增白剂的材料的漫射辐射因子和相关特性，前提是仪器照明的紫外线含量已根据描述相关特性测量的国际标准进行了调整，以提供与所选 CIE 光源的荧光参考标准相同的荧光水平。附件 C 描述了荧光参考标准的制备。 [外文原描述]： This document describes the general procedure for measuring the diffuse radiance factor of all types of pulp, paper and board. More particularly, it specifies in detail the procedures to be used for calibrating the equipment, and in Annex A, the characteristics of the equipment to be used for such measurements. This document can be used to measure the diffuse radiance factors and related properties of materials containing fluorescent whitening agents, provided that the UV-content of the instrument illumination has been adjusted to give the same level of fluorescence as a fluorescent reference standard for a selected CIE illuminant, according to the International Standard describing the measurement of the property in question. Annex C describes the preparation of fluorescent reference standards.