Ultra filtration (UF) is a variety of membrane filtration in which forces like pressure or concentration gradients lead to a separation through a semi permeable membrane. Suspended solids and solutes of high molecular weight are retained in the so-called retentate, while water and low molecular weight solutes pass through the membrane in the permeate. This separation process is used in industry and research for purifying and concentrating macromolecular solutions, especially protein solutions. Ultra filtration is not fundamentally different from micro filtration. Both of these separate based on size exclusion or particle capture.


  1. No need for chemicals (coagulants, flocculates, disinfectants, pH adjustment);
  2. Size-exclusion filtration as opposed to media depth filtration;
  3. Good and constant quality of the treated water in terms of particle and microbial removal;
  4. Process and plant compactness
  5. Simple automation.


  1. Waste water treatment
  2. Food & beverage processing
  3. Chemical & Pharmaceutical manufacturing
  4. Filtration of effluent from paper pulp mill
  5. Cheese manufacture
  6. Removal of pathogens from milk
  7. Enzyme recovery
  8. Fruit juice concentration and clarification
  9. Dialysis and other blood treatments
  10. Desalting and solvent-exchange of proteins
  11. Laboratory grade manufacturing