China Challenge Pore® PES Low-Protein-Binding Sterile Filters | Reliable Suppliers & Factory Solutions
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 |
* Challenge Filair® PTFE filter cable of up to 50 cycles of high-temperature steam sterilization.
Sterilization
0.45μm Pre-Filtration Capsule Filter Flow Rate

Frequently Asked Questions
1. What are the key features of the PES Capsule Filter?
The filter features reliable bacteria and particle retention, broad chemical compatibility (pH 1-14), extremely low leachables, and low protein binding, making it ideal for critical applications.
2. What are the typical applications for this filter?
It is typically used for the prefiltration of cell culture media, buffer filtration, pre-column/pre-ultrafiltration protective filtration, filtration of serum and blood products, and sterile filtration of final products.
3. What are the maximum operating conditions?
The maximum operating temperature is 80℃. The maximum differential pressure it can withstand is 0.55MPa at 25℃ and 0.1MPa at 80℃.
4. What materials are used in its construction?
The filter membrane is made of Hydrophilic Polyethersulfone (PES). The inner/outer cages and the capsule housing are made of Polypropylene (PP), and the capsule vent O-ring is made of Silicone Rubber.
5. Is the filter biosafety certified?
Yes, it has endotoxin levels of <0.25 EU/mL. It is compliant with USP <87> Non-cytotoxic standards and meets the USP <88> Class VI plastic biocompatibility requirements.
6. How can this capsule filter be sterilized?
The Challenge Pore® PES capsule filter can be sterilized using high-temperature steam at 121 °C for 30 minutes (up to 5 cycles) or by gamma irradiation at 25–40 kGy.





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