The drop size is of fundamental importance in the design of liquid-liquid extraction columns, the drop size was measured as a function of the geometry, operating conditions, and physical properties of a liquid-liquid system with no mass transfer in a five-stage modified Scheibel extraction column. An improved correlation of the mean drop size in the Scheibel extraction column is presented. The correlation was divided into three sections in terms of the Reynolds number. It could be applied in a wide range and could be further used for the study of mass transfer performance of the modified Scheibel extraction column.