• Feedback circuitry on all models to maintain speed even when viscosity changes
• Standard horsepower ratings from 1/40 to 1/8 horsepower
• A selection of propellers and paddles from 1.5"" to 6"" diameter
• Reference circuitry to maintain speed even with voltage fluctuations of ±10%
• Cord connections between drive motors and controls to increase convenience and allow placement away from hostile environments
• 50/60 Hz operation

A powerful stirring outfit. Totally enclosed, 1/8 hp, cool, quiet-running, permanent-magnet motor in direct and gear-drive models with torques from 3.1 lb.-in. (3.57 kg-cm) to 96 lb.-in. (111 kg-cm). Provides a stirrer with more power than the 6T60 and a selection of speed ranges up to 2,500 rpm. Continuously variable speed control. The ST20 stirring system is furnished complete with motor and mounting bracket, controller, clamp, chuck (maximum 5/8"" rods) and propeller. Lab stand is not included. 120 volt. Warranty: 1 year.