The Z207-A-CMB includes a convenient combination rotor that holds 4 x 15 ml and 4 x 50 ml tubes in the same rotor. With the combination rotor there's no longer a need switch rotors, or use adapters to centrifuge 15 ml and 50 ml tubes for tissue culture. You can even process them simultaneously! Along with the unique combination rotor, the Z207-A-CMB features the unique EZ-Scroll™ touch pad which gives you ease of control and a modern feel. An advanced microprocessor control allow for setting/displaying of the rotational speed in either rpm or rcf in increments of 10. In addition to retrieving saved programs, the easy to use front panel can be used to adjust accel/decel rates, run time, and change the end of run alarm tone. There is also a momentary spin function that will run while the button is pressed. Additionally the Z207-A-CMB features a sleep mode to save energy by shutting off after a certain time if not being used while on, which can be toggled on or off easily. Features Microprocessor with large LCD display Electrical lid lock Pre-selection of the rotor type Quick access to samples Active imbalance identifi cation and cut-off Air Cooling System Quick Acceleration and Deceleration Noise level < 60 dBA at max. speed Easy rotor exchange Manufactured in accordance to International Safety Regulations, i.e. IEC 61010 Quick acceleration and deceleration within 13 seconds Technical Data max. Speed: 6,800 rpm max. RCF: 4,394 xg max. Volume: 4 x 15 ml and 4 x 50 ml Speed range: 200 - 6,800 rpm Running time: 59 min 50 s / 10 s increments Dimensions: 11 in x 9.5 in x 13.7 in (W x H x D) Weight:17.6 lbs / 8 kg