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Blaine’s Air Permeability Apparatus
 
BS : 4359
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, Stainless Steel cell with Perforated disc plunger Rubber stopper, Rubber tube 30cm long. Packet of 12 filter paper discs