A five position magnetic stirrer with special features that furnish the controlled, gentle stirring action needed for optimum cell growth. Speed range is 1 to 100 RPM with a soft start/soft stop feature providing a gradual acceleration and deceleration of the stirrer rod to minimize cell trauma. Accommodates up to five 1000 mL vessels. 86359-02 permits interval stirring from 1 to 100 minutes "on" and 10 to 1000 minutes "off". The LCD readout of RPM is accurate to ± 1 RPM. A built-in outlet permits slaving of additional units. Overall: 17L x 15-1/4W x 2-7/8 inches high. For 110V, 50/60 Hz.