标准号:ISO 4793-1980
中文标准名称:实验室烧结(多孔)过滤器 孔隙度、分类和命名
英文标准名称:Laboratory sintered (fritted) filters; Porosity grading, classification and designation
标准类型:N64
发布日期:1999/12/31 12:00:00
实施日期:1999/12/31 12:00:00
中国标准分类号:N64
国际标准分类号:71.040.20
适用范围:Filters are graded according to their pore size index in one of the eight classes specified. This is applicable to laboratory filters made of glass, vitreous silica, ceramics, metals and plastic materials. Annex A specifies a method for determination of pore size index. Annex B and C concern with a procedure for assessing uniformity of filters and for determination of air permeability.