The state of the art design incorporates advanced safety features like Zero RPM, Lid-lock and Auto-Unbalance Detection, Rotor Recognition and Shutdown. The built in oversized LCD Display provides real time data to the user. With the push of a button you can speed up or slow down the rotor within 1,000 - 13,000 rpm with the Blood Tube Rotor). Maintenance free brushless DC motor is powerful and super quiet. The cover of the Microhematocrit rotor incorporates a reader, allowing for instant reading and eliminating the need for additional specimen handling.