标准摘要
[中文适用范围]： 本文件规定了在测量光学特性之前准备实验室表的两种程序。 一种是使用滤纸或丝网在布氏漏斗中制备垫片，另一种是在标准片材成型机（传统或快速 Köthen）中制备实验室片材。 本文件适用于所有木浆和大多数其他类型的纸浆。 它不适用于具有非常长纤维的纸浆，例如由未缩短的棉、亚麻和类似材料制成的纸浆，除非在执行该方法之前将它们减少到合适的纤维长度（约2毫米）。 它不适用于再生纸浆（参见 ISO 21993）。 它不适用于不透明度测量或光散射和吸收系数的测定。 [外文原描述]： This document specifies two procedures for the preparation of laboratory sheets prior to measuring optical properties. One is the preparation of pads in a Büchner funnel using a filter paper or a wire screen and the other one is the preparation of laboratory sheets in a standard sheet former (conventional or Rapid Köthen). This document is applicable to all wood pulps and to most other types of pulp. It is not applicable to pulps with very long fibres, such as those made from unshortened cotton, flax and similar materials, unless they are reduced to a suitable fibre length (about 2 mm) before performing the methods. It is not applicable to recycled pulps (see ISO 21993 ). It is not applicable to opacity measurements or to the determination of light scattering and absorption coefficients.
英文名称Pulps — Preparation of laboratory sheets for the measurement of optical properties