SYMPOSIA PAPER Published: 01 January 1986

Quantifying the Porous Structure of Fabrics for Filtration Applications


Quantification of the porous nature of a flat filter medium can be accomplished in a variety of ways. However, some of the commonly used methods are either inadequate or irrelevant. For example, incremental porosimetry does not produce pore size distributions that can be related to filter performance. This paper presents a method for determining types of pore constriction frequency distributions that are more directly applicable to filtration and flow-through processes. A recommended procedure for determining air permeability is shown to be inadequate both for predicting the resistance of a fabric to air flow and for comparing different fabrics. An extended air permeability test methodology is described that can be used to give a better quantification of flow-through resistance.

Author Information

Miller, Bernard
Textile Research Institute, Princeton, NJ
Tyomkin, Ilya
Textile Research Institute, Princeton, NJ
Wehner, John, A.
Princeton University
Price: $25.00
Contact Sales
Reprints and Permissions
Reprints and copyright permissions can be requested through the
Copyright Clearance Center
Developed by Committee: F21
Pages: 97–109
DOI: 10.1520/STP42083S
ISBN-EB: 978-0-8031-6046-0
ISBN-13: 978-0-8031-6200-6