aper and board -- Determination of air permeance (medium range)
Model 58-03 measures air permeability (Gurley type) of sheet like materials including Paper, Paperboard and nonwovens.
Designed to work with existing smoothness and porosity heads. It provides an inexpensive means to improve measurement accuracy, and to remove old style mercury-based measuring systems.
The Bendtsen Roughness Tester is a microprocessor-controlled instrument for measuring the roughness and air permeance of paper and board using the Bendtsen method.