Product Description Microprocessor-controlled design ESP Efficient Sedimentation Program Programmable delay start and dual display User setup with automatic preheating, precooling, vacuum and dry cycle The Beckman Optima XL-90 Ultracentrifuge is a high performance solution designed to perform 100,000 rpm with centrifugation forces that reach up to 802,400 g. This Beckman centrifuge is built with a microprocessor-controlled design that enables storage of as many as nine user programs. One of the system attributes, the ESP Efficient Sedimentation Program stimulates gradient formation and sample separations with a wide range of rotors to choose from. With the Optima XL-90, a single push of a button is all it takes to store and recall user-customized programs. Delay start can be programmed for convenient finishing time. User setup employs automatic preheating, precooling, vacuum, and dry cycle. Moreover, acceleration/deceleration profiles allow immediate customization of operating conditions. Diagnostic display also helps users monitor run conditions. Other features of the Beckman Optima XL-90 centrifuge include dual display of Set and Actual run parameters, a circuit breaker, a touch key control panel, and a built-in printer on top of display housing. Beckman Optima XL-90 Ultracentrifuge Specifications Speed Control +/- 20 rpm User programs 9 Drive Air-cooled Moisture Purging Vacuum System Yes Temperature Range 0 C to +40 C with 1.0 C increments Temperature Control +/- 0.5 C of set Ambient Operating Range 15 to 40 C Weight 465 kg Voltage 200-240 V Frequency 50/60 HZ Phase 1 Current 20 Amp Display Digital