The Mixer Settler is the standard solution for simple liquid-liquid extractions. High separation efficiency is ensured by the optimal droplet size and residence time, as well as the flexible adaptation of the geometries to different throughput and operating conditions. A low overall height and simple design allow for easy scale-up. The flexible Mixer Settler is insensitive to suspended solids, features a height-adjustable overflow for the heavy phase, and offers a reduced shutdown time between different process applications.