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PTFE Membranes
Hydrophilic PTFE Membranes
Confirm treatment stability, fluid compatibility and application limits for hydrophilically treated membranes.
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MEMBRANES / PTFE Membranes
Hydrophobic PTFE Membranes
Evaluate gas and venting requirements in the hydrophobic state. Liquid use requires a separate wetting assessment.
- Product type
- PTFE Membranes
- Material options
- PTFE
- Specifications
- Confirmed by model and process
Images and specifications refer to the indicated models. Contact us to confirm configuration and suitability.
Construction & operating principle
A dry hydrophobic PTFE membrane provides gas pathways while resisting entry of aqueous liquid that does not wet its pores. This supports development of venting and particle-control devices. Hydrophobicity is neither unlimited water-pressure resistance nor oleophobicity: surfactants and low-surface-tension liquids can wet the membrane. Composite backing also contributes to the finished material’s compatibility limits.
Typical uses
- Venting and pressure-equalisation devices
- Particle filtration in suitable gas paths
- Compatible solvent filtration after wetting assessment
Compare product approaches
| Selection factor | What to compare |
|---|---|
| Gas resistance | Size area from gas demand and allowable pressure drop rather than liquid-flow data. |
| Backing | PP, PET or other supports influence strength, joining and overall chemical compatibility. |
| Liquid exposure | Water, surfactant solutions and oils produce different wetting behaviour. |
Selection information to confirm
| Category | PTFE Membranes |
|---|---|
| Material options | PTFE |
| Filtration objective | Define what to remove and what to retain |
| Rating / Dimensions | Confirm combinations against controlled model specifications |
| Flow / Temperature / Pressure | Specify normal and limiting operating conditions |
| Connections / Seals | Confirm installation interfaces and wetted materials |
| Cleaning / Validation | Confirm the service cycle and acceptance criteria |
These are selection inputs, not verified performance claims for a specific model.
Build a clear application brief
Use the worksheet to collect your operating conditions. Contact us for controlled datasheets, dimensional drawings or validation documents for a specific model.
Product selection worksheet · TXT ↓Request technical documents ↗Use & maintenance
- 01
Assembly
Keep adhesives and clamps outside the active area and verify edge sealing.
- 02
Operation
Manage condensation; distinguish liquid coverage from particle blockage when airflow falls.
- 03
After an upset
Drying a wetted or contaminated membrane does not prove restored liquid resistance or retention.
Product questions
Does hydrophobic mean resistant to every liquid?
No. Surface tension and applied pressure influence pore entry.
Can it directly filter pure water?
An unwetted hydrophobic membrane may resist water flow; liquid service needs a suitable wetting method or modified configuration.
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