Uniquely designed mini centrifuge that works for all tube sizes from 1.5ml up to 50ml. Widely used in physical, biochemistry, cellular and molecular biology, clinical labs, blood donation centers and much more. The CL4M is extremely stable with little to no noise. It is built with the highest quality brushless DC motor for the best performance and longest life possible. It has a LCD display of time (15s to 99min) and speed (300 to 5,000 rpm). You can save up two preset programs P1/P2. The CL4M comes complete with a 4 x 50ml rotor.