ASTM D726-58

Standard Test Method for Resistance of Nonporous Paper to Passage of Air - This test method covers the determination of the resistance of nonporous paper to the passage of air. This test method cannot be used in those cases where the paper cannot be clamped securely against surface and edge leakage, such as, crepe or corrugated papers. 

Products

Gurley Smoothness

Automatic Densometer & Smoothness Tester - Gurley model 4340

The Gurley model 4340 Automatic Densometer & Smoothness Tester combines the abilities of textile, standard and high pressure...

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Gurley Densometer

Gurley Densometer

Densometers are the accepted standard for measuring the porosity of materials such as papers, wovens, plastics and membranes.All...

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