ISO-4793 › Laboratory sintered (fritted) filters -- Porosity grading, classification and designation

ISO-4793 - 1ST EDITION - CURRENT


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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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Document Number

ISO 4793:1980

Revision Level

1ST EDITION

Status

Current

Publication Date

Oct. 1, 1980

Committee Number

ISO TC 48