DESCRIPTION :- The experimental set-up of Spray Tower consists of a glass column provided with necessary accessories. It operates on a semi-batch mode. Fine spray nozzle is fitted at the top. Feeds are metered by Rotameters and derived from separate feed tanks. The liquid-liquid interface can be maintained by controlling the flow rate of extract with the help of needle valve provided on Rotameter. Total set-up is housed in a rigid structure. The structure also supports tanks, piping, Rotameters and other unit. EXPERIMENTATION :- To study the effect of the dispersed phase flow rate on overall volumetric mass transfer coefficient. Dispersed phase hold-up study.