Active standard | Published: 01/10/1980

ISO 4793:1980

Laboratory sintered (fritted) filters — Porosity grading, classification and designation
(Filtres frittés de laboratoire — Échelle de porosité — Classification et désignation)

Available languages: English, French

Available design: electronic design (pdf), Print design

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Detail information

Designation: ISO 4793:1980

Publication date: 01/10/1980

Pages: 7

Country: International technical standard

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Anotation

Description / Abstract: 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.

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