Challenge Pore® PES Low-Protein-Binding Sterile Filters from China - Reliable Suppliers & Factory Quality
Features
- Reliable bacteria and particle retention
- Broad chemical compatibility (pH 1-14)
- Extremely low leachables
- Low protein binding
Typical Application
- Prefiltration of cell culture media
- Buffer filtration
- Pre-column / Pre-ultrafiltration protective filtration
- Filtration of serum and blood products
- Sterile filtration of final products
Operating Conditions
- Maximum operating temperature: 80℃
- Maximum differential pressure: 0.55MPa/25℃, 0.1MPa/80℃
Material Construction
| Filter Membrane | Hydrophilic Polyethersulfone (PES) |
| Inner Cage, Outer Cage | Polypropylene (PP) |
| Capsule Housing | Polypropylene (PP) |
| Capsule Vent O-Ring | Silicone Rubber |
| Filtration Accuracy | 0.2+0.45μm |
Biosafety
| Endotoxin | <0.25 EU/mL |
| Biocompatibility |
• Compliant with USP <87> Non-cytotoxic • Meets USP <88> Class VI plastic biocompatibility requirements |
Dimension
| Disc Filter | D50: 20cm² |
| Capsule Filter | 01: 0.075m² 02: 0.14m² 04: 0.25m² 05: 0.34m² 10: 0.68m² |
Sterilization
0.45μm Pre-Filtration Capsule Filter Flow Rate

Frequently Asked Questions
What are the primary features of the PES capsule filter?
The filter features reliable bacteria and particle retention, broad chemical compatibility (pH 1-14), extremely low extractables, and low protein binding characteristics.
What is the chemical compatibility range of the filter?
The hydrophilic Polyethersulfone (PES) membrane offers wide chemical compatibility, operating reliably within a pH range of 1 to 14.
What materials are used in the construction of this capsule filter?
The filter membrane is made of Hydrophilic Polyethersulfone (PES). The inner cage, outer cage, and capsule housing are constructed from Polypropylene (PP), and the capsule vent O-ring is made of Silicone Rubber.
How can the Challenge Pore® PES capsule filter be sterilized?
It can be sterilized either by high-temperature steam sterilization (at 121 °C for 30 minutes, up to 5 cycles) or via gamma irradiation at doses of 25–40 kGy.
Does this capsule filter meet biosafety standards?
Yes. It has endotoxin levels of <0.25 EU/mL, complies with USP <87> Non-cytotoxic standards, and meets USP <88> Class VI plastic biocompatibility requirements.
What are the operating temperature and pressure limits?
The maximum operating temperature is 80℃. The maximum differential pressure limits are 0.55MPa at 25℃ and 0.1MPa at 80℃.





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