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Low Protein Adsorption and
Sterilization Tolerance
LOONG High-Performance Hydrophilic PES Filter Cartridges integrates
a hydrophilic polyethersulfone (PES) membrane with a polypropylene
support structure, delivering low protein binding and minimal
extractables for sensitive applications. It offers excellent thermal and
chemical stability, withstanding repeated steam sterilization and
exposure to acids, alkalis, and solvents. Each cartridge is 100% integrity
tested before shipment, ensuring reliable performance in critical
biopharmaceutical, medical, and chemical fluid processes.
• Final Sterile Filtration & Water Purification in Beer and Wine
• Cold Sterilization & Pre-bottling Filtration in Juice
• Low-Temp Pasteurization & Process Water Filtration in Dairy
• Final Particle Removal & Carbonated Beverage Filtration in Soft Drinks and Alcohols
• Microbial Reduction Filtration in Bottled Water
• RO Membrane Protection & Prefiltration
• Pure/DI Water System Protection
• Chemical Solvent Filtration
• Electrocoat Paint Recirculation Filtration
• Metalworking Fluids Filtration
• Electronic Cleaning Solvent Filtration
• Terminal Sterilization for LVP
• Sterilization of SVI
• Sterile Filtration for Lyophilized Products
• Low-Binding Filtration for Biological Media
• Sterile Venting for Bioreactors and Tanks
• Sterile Filtration of Process Disinfectants
• Point-of-Use Sterile Filtration for PW/WFI
• Ultrapure Acid & Alkali Final Filtration
• High-Purity Chemical Terminal Filtration
• UPW Polish Filtration in Distribution Loops
• Photoresist Gel & Particle Removal Filtration
• Particulate Removal from Etchants
• CMP Slurry Filtration
The LC-Series PES filter cartridge is renowned for its naturally hydrophilic, ultra-low pressure drop structure, making it an ideal choice for terminal filtration in micro-channel cold plates. Suitable for 0.1–0.45 μm fine filtration, it effectively captures particulates, corrosion products, and precipitates, significantly reducing the risk of clogging in 100–300 μm cold plate micro-channels. Its low extractables and high flow rate characteristics are perfectly suited for MLCP liquid cooling systems requiring high flow and high cleanliness.
Typical multi-layer depth structure, extremely high dirt-holding capacity;
Low pressure drop, extremely high flow rate;
Supports high-viscosity, high-particle-load coolants;
Excellent temperature resistance (100–120°C);
Suitable for pre-filtration, extending the lifespan of downstream fine filter cartridges;
Customizable interface sizes and forms for volume customers.
Pore Size (µm): 0.03•0.05• 0.1•0.22•0.45•0.8•1.2•0.1+0.22•0.22+0.22•0.22+0.45
Naturally PES membrane
Long service life and superior dirt-holding capacity
Good hydrophilicity
Excellent heat resistance makes high temperature sterilization safer and more effective
MEMBRANE | Hydrophilic PES |
CAGE & SUPPORT & END CAPS | PP |
O-RINGS/GASKET | Silicone/Viton/Epdm/Tev/Butyronitrile/Ptfe Gasket (Hard)/Ptfe Gasket (Soft) |
PP | ＜60 ℃ |
PP WITH STAINLESS STEEL LINED END CAP | ＜85 ℃ |
PP WITH STAINLESS STEEL LINING | ＜95 ℃ |
POSITIVE/REVERSE PRESSURE RESISTANCE | 4 bar/2 bar (23 ℃) |
PH RANGE | 1-14(for FPS&FCS Series) |
STEAM STERILIZATION | 123 ℃@30 min(for FPS Series) |
OUTER DIAMETER | 68 mm/70 mm |
LENGTH | 10", 20", 30", 40" |
0.1 μm | ≥3.4 bar |
0.22 μm | ≥2.3 bar |
0.45 μm | ≥1.3 bar |
ENDOTOXIN | ＜0.25 EU/ml |
EXTRACTABLE | ≤50 mg/10" |
SERIES | MATERIAL | RATING(μm) | END CAP | LENGTH(in) | SUPPORT | SEAL | PORT |
Electronics | PES | 0.1μm | 222/Fin | 5'' | PP | Silicone | Interface lining steel |
Phamarmical | 0.22μm | 222/Flat | 10'' | PBT | EPDM | Fully lining | |
Chemical | 0.01μm | 226/Fin | 20'' | PVDF | Viton | Skeleton lining | |
Beverage | 1.0μm | 226/Flat | 30'' | PFA | TEV | ||
3.0μm | DOE/Flat | 40'' | PE | Butyronitrile | |||
10μm | 215/Fin | GF | PTFE | ||||
0.22+0.22μm | 215/Flat | PTFE gasket (soft) | |||||
M20 | Metal-graphite Wound | ||||||
M30 | |||||||
216/Fin | |||||||
216/Flat | |||||||
M15 | |||||||
Insertion Type | |||||||
Barbed Type |
Why is a hydrophilic PES membrane suitable for pharmaceutical and bioprocess filtration?
Hydrophilic PES membrane offers low protein adsorption, good wettability, low extractables, and reliable particle or microbial retention. These characteristics make PES filter cartridges suitable for pharmaceutical solutions, biological products, buffers, WFI-related processes, and other applications where product recovery, cleanliness, and consistent filtration performance are important.
How do I choose the right micron rating for a PES pleated filter cartridge?
What is the difference between 0.1 μm, 0.22 μm, and 0.45 μm PES filter cartridges?
Can the PES pleated filter cartridge be steam sterilized?
Is the PES membrane compatible with my process fluid?
When should a PES pleated filter cartridge be replaced?
