UF Work Principle: The Ultrafiltration is used to screening as separation principle ,that is process of membrane separation with the pressure ,the precision of filtration is in 0.005-0.01m range,which can effectively remove particles ,colloids ,bacteria ,pyrogen and high polymer organic matter in water .It can be widely applied to the separation ,concentration,purification of substances .The Ultra filtration Process has no phase inversion , operation under normal temperature.It is better to separate for pyrogen ,and have good resistance heat ,resistance acid &alkali and oxidation resistance ,and it is continuously used under 60 and PH 2-11 for a long time.