The determination of air permeance according to Gurley or Bendtsen is carried out by means of air flow at a given pressure differential. It is a characteristic value for paper and board.
Test Method Group: Mechanical properties
Norms:
ISO 5636-5 (2013-11) Paper and board - Determination of air permeance (medium range) - Part 5: Gurley method
ISO 5636-3 Paper and board - Determination of air permeance (medium range) - Part 3: Bendtsen method
Required Sample Amount: optimum: 5 DIN A 4 sheets without folds, creases or other damages
