Swing out rotors (with variable angle) During centrifugation the tubes go in perpendicular position than axis of rotor.As a consequence the sedimentation distance and time are greater, but separation borders are perpendicular to the tube and more net.The swing out rotors are generally used to centrifuge big quantity of sample with medium speed.

Angular rotors (with fixed angle) The oblique angle of tubes reduces sed imentation distance, thus reducing the necessary time for separation, but borders are inclined respect the tube and less net.The fixed angle rotors are generally used to centrifuge minor quantity of sample with high speed.