• Brushless motor is maintenance-free, quiet during operation, and fast in accelerating and decelerating the rotor. • Variable speed control from 1000 rpm (85 x g) to 14,000 rpm (16, 000 x g). • Samples are kept at a constant temperature, even during prolonged runs at maximum speed, due to a unique ducting system that supplies a continuous flow of ambient air to the rotor chamber. • Cold room compatible for applications requiring subambient temperatures. • Operation can be timed from 1 to 30 min. (resettable at any time) or momentary. • Supplied with 18-place rotor for 1.5/2.0 ml tubes. Rotor is easily removed for cleaning and autoclaving. Smaller tubes can be accommodated by adapters (sold separately). • Dimensions: 8.25 W x 8.9 D x 7.6”H. • Power: 120V.