Friability test apparatus single drum
Used to determine the durability and abrasiveness ol tablets a transparent perspex drum made of imported perspex sheet 6. 4 mm thick 300 mm dia x 35 mm deep and white cover disc and nut. Also a
shaped radical fixed blade which carries the tablets along with it up to the central height and lets them off while the drum is rotating. Thus the tablets rub against each other without any hard impact the drum rotates at a fixed speed of 30 rpm by a geared motor and the rotation period is
controlled by a timer. The motor unit is housed in a shaped steel cabinet with shaft extended on one side upon which the drum rotates switches with neon indicators and lime switch are fitted on a panel and provided work on 220volts 50 hz ac.