Eppendorf 022629888 5702 Centrifuge with 4 x 85mL Swing Bucket Rotor, 100-4,400rpm Speed, 230V Variable-speed centrifuge with speeds ranging from 100 to 4,400 rpm Compatible with six interchangeable rotors (sold separately) and can accommodate up to four 100mL tubes Digital speed control in both rpm and RCF Rotor imbalance is detected for reduced wear, noise, and vibration Lid lock prevents the unit from being opened while the centrifuge is running for increased safety