袋式过滤介质渗透性和过滤效率分布评价试验方法

[中文适用范围]： 本文件规定了过滤介质厚度、面积质量、透气性和收集效率分布的测量方法，适用于编织和非编织过滤介质。本文件提供了一种从过滤介质中取样（位置、尺寸和数量）以准确获得其性能分布的方法。本文件的目的是为用户提供关于过滤介质形态的更准确的信息，而不是对过滤介质的性能进行比较。 [外文原描述]： This document specifies a measuring method for the distribution of thickness, area mass, gas permeability and collection efficiency in the filter medium, and applies to both woven and non-woven filter medium. This document provides a method for sampling specimen (position, size and number) from the filter medium required to obtain its performance distribution accurately. The purpose of this document is to provide more accurate information about the morphology of the filter medium for users, and not to compare grade the performance of the filter medium.