Extra large HiCen XL high speed centrifuge is refrigerated and microprocessor controlled with max capacity of 6x1000ml and two vertical rotors speeds (500-21,000 rpm @ 100rpm intervals), with 4 swing out rotors and 18 angle rotors. The stainless steel chamber has extra inner guard ring with motorized lid lock, auto lid open and emergency release. Timer sets up to 180 minutes in 1 minute increments. There are 8 acceleration/deceleration ramps. The color display provides data on current/preset speed/g-force, temperature and time. There is protection from cut-off, imbalance and overspeed. The induction drive is brushless and needs no maintenance.