The minimum impeller speed needed to obtain complete liquid-liquid dispersion in baffled vessels Is examined experimentally for six-blade disk turbines, flat paddles, pitched paddles and four-blade propellers of three different sizes. The minimum impeller speed for complete liquid-liquid dispersion is detected by the method developed by using a multimeter, From the data obtained in this work, the impeller position above the vessel base to get the minimum power input, for complete liquid-liquid dispersion is determined. The correlation for the minimum impeller speed for complete liquid-liquid dispersion in baffled vessels is also proposed.