The Plasma Separator is applied with the Disposable Plasma Apheresis Set. The Plasma Separator adopts the advanced computer technology, the blood centrifugal separation technology and peristaltic pump technology which will induce no pollution in infusion liquid. In the closed system，whole blood from the donor is mixed with anticoagulant in certain proportion by peristaltic pumps，then it gets into plasmapheresis bowl which rotates at high speed in the centrifuge to separate blood components. The components of blood will arrange themselves in the bowl from the center to periphery because of density difference. This equipment can perform plasma collection through the control of sensors, valves and pumps. And it also can ensure the other blood components not to be damaged and return to the donor safely.