China Suppliers Factory Challenge Filair® PTFE Hydrophobic Sterile Filters for High Retention & Throughput
Features
- Natural hydrophobicity
- High retention rate
- High throughput with low pressure drop
- Reliable bacteria and particle retention
Typical Applications
- Vents for Fermenters, Storage Tanks, etc.
- Sterile Filtration for Compressed Air, O₂, N₂, etc.
Operating Conditions
- Maximum operating temperature: 80℃
- Maximum differential pressure: 0.55MPa/25℃, 0.1MPa/80℃
Biosafety
| Endotoxin | < 0.25 EU/mL |
| Biocompatibility |
|
Filter Dimensions
- Disc Filter: D50: 20 cm²
- Capsule Filter: 01: 0.075m² | 02: 0.14m² | 04: 0.25m² | 05: 0.34m² | 10: 0.68 m²
Sterilization
- Challenge Filair® PTFE filter capable of up to 50 cycles of high-temperature steam sterilization
Material Construction
| Filter Membrane | Hydrophobic Polytetrafluoroethylene (PTFE) |
| Inner Cage, Outer Cage | Polypropylene (PP) |
| Capsule Housing | Polypropylene (PP) |
| Capsule Vent O-Ring | Silicone Rubber |
| Filtration Accuracy | 0.2μm |
0.2μm Gas Capsule Filter Flow Rate

Frequently Asked Questions
What is the filtration accuracy of the Gas Capsule Filter?
The filtration accuracy of this hydrophobic PTFE gas capsule filter is 0.2μm, providing reliable bacteria and particle retention.
What materials are used in the construction of this filter?
The filter membrane is made of Hydrophobic Polytetrafluoroethylene (PTFE). The inner cage, outer cage, and capsule housing are constructed of Polypropylene (PP), and the capsule vent O-ring is made of Silicone Rubber.
What are the maximum operating temperature and differential pressure limits?
The maximum operating temperature is 80℃. The maximum differential pressure limits are 0.55MPa at 25℃ and 0.1MPa at 80℃.
Can the Challenge Filair® PTFE filter be sterilized?
Yes, the Challenge Filair® PTFE filter is capable of withstanding up to 50 cycles of high-temperature steam sterilization.
Does the filter meet international biosafety standards?
Yes, it is highly biocompatible. It is compliant with USP <87> Non-cytotoxic standards, meets USP <88> Class VI plastic biocompatibility requirements, and has an endotoxin level of less than 0.25 EU/mL.
What dimensions are available for the Disc and Capsule filters?
The Disc Filter has an area of D50: 20 cm². The Capsule Filter is available in multiple sizes: 01 (0.075m²), 02 (0.14m²), 04 (0.25m²), 05 (0.34m²), and 10 (0.68m²).





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