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Homepage>ISO Standards>ISO 4793:1980-Laboratory sintered (fritted) filters — Porosity grading, classification and designation
download between 0-24 hoursReleased: 1980
ISO 4793:1980-Laboratory sintered (fritted) filters — Porosity grading, classification and designation

ISO 4793:1980

ISO 4793:1980-Laboratory sintered (fritted) filters — Porosity grading, classification and designation

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French Hardcopy
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Standard´s number:ISO 4793:1980
Pages:7
Edition:1
Released:1980
DESCRIPTION

ISO 4793:1980


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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