Sterile air, gas and vent control
Hydrophobic membrane filtration for air, gas and vent applications.
Pore rating alone does not establish sterilizing-grade gas performance
Filter formats
Hydrophobic PTFE, PVDF and PES membranes support contamination-controlled filtration of air, process gases and vessel vents. Disc, capsule and cartridge formats cover small disposable assemblies, production tanks, bioreactors and compatible compressed-gas systems.
Disc-format filters support small containers, laboratory gas lines and single-use assembly vents where compact integration is required.
Filtration area 10–20 cm²
Ready-to-connect capsules provide a closed option for disposable vessel venting and process-gas applications across multiple scales.
Available scale Pilot to production
Cartridges install in compatible reusable housings for tank venting, compressed-gas filtration and larger airflow requirements.
Housing interfaces DOE · 222 · 226
Hydrophobic media and pore-size selection
PTFE, PVDF and PES hydrophobic membranes resist liquid wetting while allowing gas flow. Select the medium and pore rating for the required claim, gas chemistry, humidity, sterilization conditions and exposure to condensate, aerosols or process vapors.
End-user applications
Required flow, pressure drop, humidity, condensate exposure, sterilization conditions and the consequences of partial membrane wetting should be defined before final filter sizing.
Venting of bioreactors, fermenters, media tanks and hold vessels.
Contamination-controlled gas delivery to compatible process operations.
Filtration of compatible compressed air, nitrogen, carbon dioxide and other gases.
Vent filtration for filling, transfer, collection and storage vessels.
Venting of disposable fluid paths, containers and compatible processing assemblies.
Autoclave, lyophilizer, vacuum-break, pressure-equalization and clean instrument-air duties within validated limits.
Filter-selection guidance
Critical vent filters should have a defined integrity-test strategy before and after use where required. Installation design should support drainage and minimize condensate contact with the membrane.
Define maximum gas flow and the highest acceptable differential pressure under normal and upset conditions.
Confirm whether the duty requires sterile-gas performance, microbial reduction or particulate control.
Provide gas composition and any solvent, product-vapor or chemical exposure that may contact the filter.
Assess aerosol loading, expected condensation and the effect of partial wetting on available airflow.
Define operating temperature, sterilization method, integrity-test method and acceptance criteria.
Confirm orientation, drainage, vent-line design, connections, housing and seal compatibility.
Configuration matrix
Availability depends on the selected medium, pore size, filtration area and filter format. Not every option is available in every combination. Compatibility must be confirmed for gas composition, humidity, temperature, sterilization, condensate and vapor exposure.
| Media | General characteristics | Suggested applications |
|---|---|---|
| Hydrophobic PTFE | Highly hydrophobic membrane with broad chemical compatibility and strong resistance to moisture penetration | Critical gas and vent filtration, aggressive gases or vapors, and demanding chemical environments |
| Hydrophobic PVDF | Hydrophobic membrane offering good airflow, mechanical strength and chemical resistance | Clean gas, compressed-gas and vessel-vent applications |
| Hydrophobic PES | Hydrophobic membrane designed for high gas flow and integration into compact disposable devices | Single-use venting, clean-air exchange and compatible process-gas applications |
| Format | Filtration area | Connection or end options |
|---|---|---|
| Disc-format filter | 10–20 cm² | 1/4–1/2 in. stepped hose barb |
| Capsule filter | 180–660 cm²; 0.25–3.2 m²; selected 0.8–2.4 m² configurations | 9/16, 3/4, 1-1/4 and 1-1/2 in. sanitary flanges; 3/8, 1/2, 9/16, 5/8, 3/4 and 1 in. stepped hose barbs; 1/4–1/2 and 1/4–3/8 in. multi-stepped hose barbs; selected 1-1/2 in. sanitary T-style connection |
| Cartridge filter | 180–660 cm²; 0.25–3.2 m² | Double open end, 222 and 226 end configurations; customizable O-ring options |
Confirm the required performance claim, gas composition, maximum flow, pressure drop, humidity, condensate exposure, membrane, pore rating, filtration area, sterilization, integrity test, installation and interfaces before submitting the final RFQ for technical review.