ASTM D737
Standard Test Method for Air Permeability of Textile Fabrics
This test method covers the measurement of the air permeability of textile fabrics.
This test method applies to most fabrics including woven fabrics, nonwoven fabrics, air bag fabrics, blankets, napped fabrics, knitted fabrics, layered fabrics, and pile fabrics. The fabrics may be untreated, heavily sized, coated, resin-treated, or otherwise treated.
Products

Air permeability tester for medical protective masks (Differential pressure)
This air permeability tester measures air permeability of textile fabrics such as clothing and industrial fabrics, technical, downproof...

Air Permeability Tester - AirPerm
The AirPerm automatically measures the flow of air through a given area of a fabric under a set...