Hettich Mikro 22R refrigerated centrifuge. Maximum speed 18,000 rpm (31,514 xg). Adjustable temperature from -20°C to +40°C. Timed from 1 to 99 min or continuous operation. Spin function. Programmable. Maintenance-free brushless motor. Dimensions (HxWxD): 278*333*620 mm; 36 kg. User manual. Includes 1153 rotor for 30 1.5/2 mL eppendorf tubes and maximum speed of 14,000 rpm.