The setup consists of a Reactor in which solid cylinder of Benzoic Acid is placed and water is stirred by means of a variable speed mixer. Baffles are also provided. The Reactor is made of Stainless Steel. A Peltilizer is provided to make the solid cylinder of size 1" diameter and 2" height of Benzoic Acid. The present set-up has a facility to interface the system with computer which enables to