The MIXER -SETTLER is a revolutionary new device, which makes phase separation automatic and simple, irrespective of the concentr two phases (interface height). The mixer settler is the name given to a type of EXTRACTOR made up of a number of mixing and chambers connected alternately in series. In the mixing chambers optimum mass transfer is achieved by through mixing of two phases waid of pumps and stirrers. In the simplest case, the MIXER -SETTLER consist of adjustable overflow valve, stirrer drive assembly and zone.