Magnetic Stirrers : Compact stirring device utilizing a rotating magnetic field by a permanent magnet including variable stirring action. Magnetic field applied from below the container. Stirring is accomplished by a ptfe rotor placed in the liquid to be stirred. Complete with pilot lamp, plug-cord, speed regulator continuously variable, heat control knob, on-off switch. It works on 220V AC 50Hz single phase. Models with or without Hot Plate are available: