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The apparatus is used for determining the fineness of cement in terms of specific surface expressed as total surface area in square centimeters per gram of cement. This is a variable flow type air permeameter.
Specifications : The apparatus consists one each of permeability cell 12.5mm I.D. Manometer U type mounted on stand with a built in stop cock, Perforated disc, Plunger Rubber stopper, Rubber tube 30cm long. Packet of 12 filter paper discs and a bottle of 100cc dibutyiphthalate liquid.
Spares and Accessories:Punch to cut filter paper discs. Non-perforated disc. Suction bulb