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ISO 4793:1980

Laboratory sintered (fritted) filters — Porosity grading, classification and designation

Standard Details

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
Standard Type: Main
Document No: ISO 4793:1980
Document Year: 1980
Pages: 7
Edition: 1
  • ICS:
  • 71.040.20 Laboratory ware and related apparatus

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ISO 4793:1980
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