1. Hydrophilic PES cartridge filter uses hydrophilic polyether sulfone (PES) microporous membrane; 2. With the characteristics of wide chemical compatibility, low protein adsorption and high flow capacity ; 3. Suitable for bio-pharmaceutical field, eye drops, diagnostic reagent, etc; 4. Using double layer PES microporous membrane; 5. Various kinds of filtration precision; 6. Using polypropylene (PP) skeleton and the supporting material; 7. Comply with FDA and GMP requirements; 8. Its material meets the current USP Biological Safety standards and GB9688-1988, GB/T17291-1998 standards; 9. 100% passed the integrity test before shipment ; 10. Provide complete verification guidance document and verification services; 11. Passed rigorous verification before shipment: 12. Bacteria challenge test; 13. Integrity test; 14. Biological safety test; 15. Flow measurement; 16. Pressure test; 17. Heat resistance test; 18. Cleaning test; 19. Chemical compatibility test.