The Beckman GPKR refrigerated centrifuge offers high power and reliabilty in a compact design that is small enough for under cabinet storage. It is equipped with digital display that indicates the actual speed to the nearest 10 rpm. The transparent door is ideal for strobe speed verification. This centrifuge has a maximum speed of 8000 rpm with analog controls in increments of 100 rpm. Maximum RCF: 5200G. Maximum Capacity: 4 x 750 mL. Normal operating temperature range of -10 to 25C. Automatic soft start (slow start followed by full speed acceleration to set speed). Three settings of high and low brake and OFF for coast 30 minute countdown timer, with additional HOLD and OFF options. Automatic door interlock during centrifugation. This centrifuge is on wheels for convenient roll-away storage when not in use. This centrifuge includes the swinging bucket rotor (maximum rated speed is 3750RPM) and buckets shown in photos. Additional accessories (inserts specific to tube size) may be available at extra cost.