The
apparatus consists of 4 parts. A water bath with 500 watt heater covered 1000
ml. vessel made from broil glass and digital temperature control. Variable
speed motor, with 30cms long stainless steel shaft. A cylindrical stainless
steel basket and a membrane fixing attachment, water bath is made of imported
thick Acrylic sheet with transparent cover at top. Temperature of the bath is
maintained at 37°C with an accuracy of ±1° C.A cylindrical glass vessel of 1000
ml. capacity with slightly concave bottom has a flanged edge at the top to
accept a fitted cover having four holes. One hole placed in the center. The
shaft of the motor is fitted on an up right and has an electronic speed
regulating device that allows the speed to be varied from 25 to 150 R.P.M. The
shaft is 6 mm dia. 30 cms on with basket fitted at end rotates smoothly and
without any significant wobble. The basket consists of two parts one of which
is attached to the shaft. It is of solid metal except for 2 mm vent and is
screwed on the main shaft. Lower part of the basket is held with this part by
means of threading and this allows proper removal of lower part for
introduction of the test samples. The detachable part of the basket is
fabricated of stainless steel mesh formed into cylinder of size 36 mm × 25 mm
dia. The equipment is workable on 220 volt 50 C/S A.C. but analog type double,
three, six & eight stage.
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