Abstract
Using a new type of torque meter with an extremely high sensitivity, some attempts have been made to get more detailed information than ever about coalescence and dispersion in a stirred liquid-liquid system. A dimensionless empirical equation could be derived relating the perfect-dispersing time, defined from the transient characteristics of torque received by a stirrer''s shaft, to the several representative dimensionless groups. Furthermore it was made clear how much portions of the entire energy given to the liquid-liquid system are directly responsible for the dispersing process itself.
