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China Suppliers: Challenge Pore® PES Low Protein-Binding Hydrophilic Filters from Reliable Factory
Features
- Unique dual-layer design
- Reliable bacteria and particle retention
- Broad chemical compatibility (pH 1-14)
- Extremely low extractables
- Low protein binding
Typical Applications
- Prefiltration of cell culture media
- Buffer filtration
- Pre-column / Pre-ultrafiltration protective filtration
Operating Conditions
Maximum Operating Temperature
80℃
Maximum Differential Pressure
0.55 MPa / 25℃
0.1 MPa / 80℃
0.1 MPa / 80℃
Filter Dimensions
Size 01
0.05 ㎡
Size 05
0.28 ㎡
Size 10
0.55 ㎡
Biosafety
| Parameter | Specification / Compliance |
|---|---|
| Endotoxin | < 0.25 EU/mL |
| Biocompatibility |
|
Sterilization
Challenge Pore® PES capsule filter cable of be sterilized by high-temperature steam (121 °C for 30 minutes, up to 5 cycles) or by gamma irradiation (25–40 kGy).
Material Construction
| Component | Material / Specification |
|---|---|
| Filter Membrane | Hydrophilic Polyethersulfone (PES) |
| Inner & Outer Cage | Polypropylene (PP) |
| Capsule Housing | Polypropylene (PP) |
| Capsule Vent O-Ring | Silicone Rubber |
| Filtration Accuracy | 0.8+0.45μm / 1.0+0.65μm / 1.0+0.8μm |
Frequently Asked Questions
What are the primary applications for the PES capsule filter?
The typical applications include prefiltration of cell culture media, buffer filtration, and protective pre-column / pre-ultrafiltration filtration.
What is the chemical compatibility range of this filter?
This filter features broad chemical compatibility, operating reliably within a pH range of 1 to 14.
What are the sterilization limits for the Challenge Pore® PES capsule filter?
It can be sterilized using high-temperature steam (121 °C for 30 minutes, up to 5 cycles) or through gamma irradiation within the range of 25–40 kGy.
Does this filter meet biosafety standards?
Yes, it is compliant with USP <87> Non-cytotoxic standards and meets USP <88> Class VI plastic biocompatibility requirements. The endotoxin level is restricted to <0.25 EU/mL.
What materials are used in its construction?
The filter membrane is made of Hydrophilic Polyethersulfone (PES), the inner/outer cage and capsule housing are made of Polypropylene (PP), and the vent O-ring is constructed from Silicone Rubber.
What filtration accuracy options are available?
The filtration accuracy configurations include 0.8+0.45μm, 1.0+0.65μm, and 1.0+0.8μm.





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