Applicable Apparatus:  The Frazier Differential Pressure Air Permeability Tester

Edana 140.1-81 - Air Permeability

Recommended Test: Nonwovens Air Permeability

A.  Scope

This test method proposal covers the evaluation of Air Permeability of nonwoven from which a value for porosity may be calculated.

E.  Amendments

• Area for analyses should be 20-50 cm²
• ^{Delta P (differential pressure) should be 196 Pa (20 mm H2O or 0.79" H2O)}

F. Equipment

Applicable Apparatus:  The Frazier Differential Pressure Air Permeability Tester

Based on ASTM D737