ISO 3688:1999 纸浆-蓝光漫反射因数（ISO 白度）的调理.

标准编号：ISO 3688:1999

中文名称：纸浆-蓝光漫反射因数（ISO 白度）的调理.

英文名称：Pulps — Preparation of laboratory sheets for the measurement of diffuse blue reflectance factor (ISO brightness)

发布日期：1999-03

标准范围

本国际标准规定了在测量蓝色漫反射系数（ISO亮度）之前准备实验室表的两种程序。一种是基于使用滤纸或金属丝网在Abuchner漏斗中制备片材的传统方法。在另一个过程中，片材在标准片材成型机中制备（常规或快速K？然后）。后续测量程序的细节在ISO 2470中给出。它适用于所有木浆和大多数其他类型的纸浆。纤维很长的纸浆，如由未缩短的棉花、亚麻和类似材料制成的纸浆，在通过本方法进行测试之前，应将其缩短至合适的纤维长度。本国际标准应与ISO 2469和ISO 2470一起使用。

This International Standard specifies two procedures for the preparation of laboratory sheets prior to measuring the
diffuse blue reflectance factor (ISO brightness). One is the traditional procedure based on preparation of sheets in a
Büchner funnel using a filter paper or a wire screen. ln the other procedure, the sheets are prepared in a standard
sheet former (conventional or Rapid K？then).
Details of the subsequent measurement procedure are given in ISO 2470.
It is applicable to all wood pulps and to most other types of pulp. Pulps with very long fibres, such as those made
from unshortened cotton, flax and similar materials, shall be reduced to a suitable fibre length before testing by this
method.
This International Standard shall be used in conjunction with ISO 2469 and ISO 2470.

标准预览图