A New Method for the Determination of Cigarette Paper Porosity and Ventilation / Neue Methoden zur Messung der Porosität von Cigarettenpapier und des Ventilationsgrades von Cigaretten

New methods and the necessary equipment are described by which the porosity of relatively long strips of cigarette paper can be determined in a rapid and simple way. For the first time, the percentage of the total puff volume penetrating through the cigarette paper can be measured directly. The authors give several examples of application and at the same time they describe two new methods for determining the by-passing air