Abstract
The air permeability test method is based on the Kozeny equation. Weighed fibres (test specimen) are introduced in a measuring chamber with known volume. Air is passed through this test specimen. A scale indicating variations in permeability of air may be calibrated in appropriate absolute units of rate of flow or pressure difference and a table or graph is provided for conversion of the observed reading into values of mean diameter of the measured wool fibres.
General information
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Status: WithdrawnPublication date: 1976-11Stage: Withdrawal of International Standard [95.99]
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Edition: 1Number of pages: 8
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Technical Committee :ISO/TC 38/SC 23ICS :59.060.10
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Life cycle
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Now
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Revised by
PublishedISO 1136:2015
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