Specifications Maintenance-free induction drive Micropocessor with large LCD display Motor driven lid lock Automatic rotor identification system with over speed protection, immediately upon rotor insertion Active imbalance identification and cut off (rotor-specific) CFC-free refrigeration system A large variety of rotors and accessories Audible signal at the end of each run with several melody options Noise level < 65 dBA (depend on rotor) Manufactured according to international safety regulations, i. e. IEC 61010 Distinct Control Panel Simple one handed operation Easy to program with gloves on Permanent indication of preset and actual values Selection of speed in both rpm and g-force, with increments of 10 10 acceleration and deceleration rates, possibility of unbraked deceleration Temperature range from -20°C to 40°C with 1°C increments Pre-cooling program Standstill cooling Pre-selection of the running time from 10 s to 99 h 59 min or continuous Storage of up to 99 runs including rotor Quick-key for short runs Max Speed 6,000 rpm Max RCF 24,328 x g Max Volume 4 x 750 ml Speed Range 200 - 16,000 rpm Temperature Range (Z446 K) -20°C to 40°C Running Time 59 min 50 s / 10 s increments or 99 h 59 min 50 s / 1 min increments Dimensions (WxHxD) (Z446) 54 x 39 x 67 cm / 21.3 x 15.4 x 26.4 in Dimensions (WxHxD) (Z446 K) 73 x 39 x 67 cm / 28.7 x 15.4 x 26.4 in