Contains magnetic stirring controller, stirring head, and magnetic stirring bar for 10 mm pathlength cuvette. It is used with single cell holders to add stirring capability. There are up to 2 cells stirring, with an extra wide speed range of 100 to 1600 rpm. The control unit comes with 20 watts rated stirring power. A graphic display allows all settings to be readable at a glance. The operating temperature range is 0 to 40°C.