Challenge Pore® PES Low-Protein-Binding Filters from China Suppliers - Sterile Solutions from Factory
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 |
|
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

1. What is the chemical compatibility of the PES capsule filter?
The Hydrophilic Polyethersulfone (PES) capsule filter offers broad chemical compatibility across a wide pH range of 1 to 14.
2. What are the maximum operating pressure and temperature limits?
The filter can operate at a maximum temperature of 80℃. The maximum differential pressure limits are 0.55 MPa at 25℃ and 0.1 MPa at 80℃.
3. What materials are used to construct the capsule filter?
The filter membrane is constructed from Hydrophilic Polyethersulfone (PES), the inner/outer cages and capsule housing are made of Polypropylene (PP), and the capsule vent O-ring is made of Silicone Rubber.
4. Does the filter meet biosafety standards?
Yes. The filter endotoxin levels are <0.25 EU/mL. It is compliant with USP <87> Non-cytotoxic standards and meets USP <88> Class VI plastic biocompatibility requirements.
5. How can the PES capsule filter be sterilized?
The capsule filter can be sterilized using high-temperature steam sterilization (at 121 °C for 30 minutes, up to 5 cycles) or through gamma irradiation within a range of 25–40 kGy.
6. What dimensions and filtration areas are available?
The Disc Filter is available in D50 (20cm²). The Capsule Filters are available in various effective filtration areas: 01 (0.075m²), 02 (0.14m²), 04 (0.25m²), 05 (0.34m²), and 10 (0.68m²).





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