The apparatus consists of 4 parts. A water bath with a 500-watt heater covered 1000 ml. vessel made from Borosil glass and digital temperature control. Variable speed motor, with 30cms long stainless steel shaft. With a cylindrical stainless steel basket and a membrane fixing attachment, the water bath is made of an imported thick Acrylic sheet with a transparent cover at top. The temperature of the bath is maintained at 37C with an accuracy of 1 C. A cylindrical glass vessel of 1000 ml. capacity with a slightly concave bottom has a flanged edge at the top to accept a fitted cover having four holes. One hole is placed in the center. The shaft of the motor is fitted on an upright and has an electronic speed regulating device that allows the speed to be varied from 25 to 250 R.P.M. The shaft is 6 mm dia. 30 cm on with the basket fitted at the end and 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 the 2 mm vent and is screwed on the main shaft. The lower part of the basket is held with this part by means of threading and this allows proper removal of the lower part for the introduction of the test samples. The detachable part of the basket is fabricated of stainless steel mesh formed into the cylinder of size 36 mm x 25 mm dia. The equipment is workable on 220 volts 50 C/S A.C. but Analog type single, Double, Three, Six & Eight stages.

• Precise design