Z233 MK-2 refrigerated microcentrifuge provides high speed capabilities with intelligent control and features a variety of rotor options, including the 6-ml × 30-ml angle rotor. This high performance model also features a brushless induction motor capable of attaining speeds of up to 15,000rpm/21,380 ×g. A microprocessor controls all run parameters, including rate of acceleration and brake intensity. A g-force conversion program permits speed to be set in either rpm or rcf and allows both to be displayed during a run. The centrifuge requires minimal bench space, and its refrigeration system can maintain samples at or below 4 C, even during prolonged runs. Ten rotors are available.