Reference number
ISO 4793:1980
© ISO 2024
International Standard
ISO 4793:1980
Laboratory sintered (fritted) filters — Porosity grading, classification and designation
Edition 1
1980-10
Read sample
Published (Edition 1, 1980)
This publication was last reviewed and confirmed in 2023. Therefore this version remains current.

ISO 4793:1980

Language
Format
CHF 63
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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.

General information

  • Status
     : Published
    Publication date
     : 1980-10
    Stage
    : International Standard confirmed [90.93]
  • Edition
     : 1
    Number of pages
     : 7
  • Technical Committee :
    ISO/TC 48/SC 7
    ICS :
    71.040.20 
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