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

  • Status :  Withdrawn
    Publication date : 1976-11
  • Edition : 1
  • :
    ISO/TC 38/SC 23
    Fibres and yarns
  • 59.060.10
    Natural fibres

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