NPH-11 FRIABILITY TEST APPARATUS SINGLE

Used to determine the resistance of tablets to the abrasion and
shock experienced in manufacturing, packing and shipping
operations, for the durability and abrasiveness of tablets.
Instrument consist of a transparent perspex drum of perspex sheet
6.4 mm. thick, 300 mm. dia x 35 mm. deep and white cover disc
and nut, also a shaped radial fixed blade which carries the tablets
along with it up to the central height and lets them of while the
drum is rotating. Thus the tablets rub against each other without
any hard impact. the drum rotates at a fixed speed of 25 R. P. M. by
a geared motor and the rotation period is controlled by a timer
having duration of 1 to 15 minutes per determined end preset. The
motor unit is housed in a shaped mild steel cabinet with shaft
extended on one side upon which the drum rotates. Switches with
neon indicators and time switch are fitted on a panel land
provided, work on 220 volts 50 Hz A.C.