ISO 5636

Paper and board -- Determination of air permeance (medium range)

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  TMI 58-03 Densometer (Gurley)

  Model 58-03 measures air permeability (Gurley type) of sheet like materials including Paper, Paperboard and nonwovens.

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  TMI 58-27 Bendtsen Roughness Tester

  The Bendtsen Roughness Tester is a microprocessor-controlled instrument for measuring the roughness and air permeance of paper and board using the Bendtsen method.