Hydrophobic Membranes (Venting)
Millipore offers both hydrophilized and naturally-hydrophobic membranes for a variety of applications.
Typical Applications
- Bag and tubing vents
- Vial vents
- Pump vents
- IV vents
- Transducer protection
- Vent caps
- Insufflation
- Gas anesthesia monitoring
Fluoropore (PTFE) Membrane
Can be used in applications which require high chemical and temperature resistance. Good air flow. Seals well to most plastics.SurVent PTFE Membrane
| Material | PTFE with PET or PP backing | |||
| Pore Size ( µm ) Backing | 0.2/PP | 0.2/PET | 1.0/PP | 1.0/PET |
| Thickness (mils) | 7-15 | 4-9 | 7-15 | 2.5-8 |
| Max. Operating Temp (?C) | 150 | 177 | 150 | 177 |
| Tensile Strength (lbs) | 62 | 14 | 62 | 14 |
| ETO Compatibility | Yes | Yes | Yes | Yes |
| Water breakthrough (psi) | 50 | 50 | 10 | 10 |
| Airflow rate (sipm/cm2 at 10 psi) | 4.8 | 4.8 | 8.8 | 39.5 |
| Minimum Bubble Point | 15 | 15 | 6 | 6 |
SureVent PVDF Membrane
This super-hydrophobic PVDF membrane repels most liquids, including alcohol, protein, lipid, and other solutions with low surface tensions. You'll find it in our Dualex transducer protectors and IV Express filter units.SurVent PVDF Membrane
| Pore Size ( µm ) | 0.1 | 0.22 | 0.45 | 0.65 | 1 | 2.0-5.0*** |
| Thickness ( µm ) | 80-140 | 100-150 | 90-140- | 90-140 | 90-140 | 90-175 |
| Max. Operating Temp. (?C)** | 126 | 126 | 126 | 126 | 126 | 126 |
| Tensile Strength (libs/in) | >2.7 | >2.7 | >2.7 | >2.7 | >1.7 |  |
| Gamma Compatibility | Yes | Yes | Yes | Yes | Yes | Yes |
| Water breakthrough | 73 | 45 | 25 | 15 | 7 | 2 |
| Airflow rate (slpm/cm2 at 10 psi) | >1 | >1 | >1 | >4.5 | >12.8 | >13 |
** Use at temperatures below 80?C for aromatic Hydrocarbons.
** Nominal Size
SureVent UPE Membrane
This naturally hydrophobic membrane is an excellent value for basic venting and gas filtration applications. It has excellent airflow and it seals well to most plastics.SurVent UPE Membrane
| SureVent UPE Membrane | SureVent UPE Membrane | |||||||
| Material | Ultra-high molecular-wieght (standard) | Ultra-high molecular-weight (thin) | |||||||
| Pore Size ( µm ) | 0.05 | 0.1 | 0.2 | 0.45 | 0.65 | 1 | 0.05 | 0.1 | 0.2 |
| Thickness ( µm ) | 60-75 | 60-90 | 80-110 | 128-168 | 90-130 | 80-120 | 35-55 | 45-75 | 35-55 |
| Max. Operating Temp. (?C) | 80 | 80 | 80 | 80 | 80 | 80 | 80 | 80 | 80 |
| Tensile Strength (libs/in) * | 3.8 | 3.3 | 2.9 | 3.4 | 2.6 | 2 | 1.7 | 3.5 | 1.4 |
| Gamma Compatibility | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
| Airflow rate (slpm/cm2 at 10 psi) | 1.1 | 1.4 | 2.7 | 4.5 | 13.9 | | 3.5 | 5 | 8.9 |
| Minimum Bubble Point ** | 50 | 36 | 34 | 15 | 73 | 3 | 50 | 36 | 24 |
** Wet with IPA
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Features
- Development Guide: Rapid Lateral Flow Test Strips
- Article: Basic Steps for Membrane Selection
- Article: Incorporating Microporous Membranes in Medical Devices