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Air and Gas Filtration


Hydrophobic sterilizing-grade filters are commonly used as air vents on processing tanks. The goal of the application is to maintain near ambient pressure in the tank while ensuring sterility. The tank vent filter removes viruses and microorganisms from the gas as it flows in or out of the tank.

Millipore offers a wide variety of membranes and formats for vent filtration, offering outstanding flow rates, retention, thermal and hydraulic stress.

The right membrane for your application

Aervent cartridges provide cost effective sterile gas filtration by maximizing the useful service life, while minimizing the risk of service-related integrity failures. These sterilizing-grade filters are made Teflon PTFE membrane and polypropylene components.

Aerex 2 cartridge filters provide high flow rates at low pressure differentials. Designed to remove bacteria and viruses from moist gas stream, thee filters are ideally suited for use in bulk fermentation applications.

Aerex cartridge filters are designed specifically to withstand multiple steam cycles, forward and reverse pressures, and long-term thermal stresses associated with applications such as fermentation air filtration.

Durapore 0.22 mm hydrophobic cartridges are manufactured to maximize retention and strength. These filters are ideally suited for applications such as product tank vents, where liquid bacterial retention is required.


Millipore has the right filter format for you.

Disposable Filter Devices

Aervent-50 disposable filters with Aervent membrane are designed for critical small gas and air venting applications

Opticap disposable capsules emphasize sterility assurance, ease-of-use and safety. Their unique design allows for unparalleled thermal and hydraulic resistance in a disposable filter.

Low Area Cartridge Filters

Millidisk hydrophobic cartridges are well-suited for applications where particle shedding is a concern. Millidisk filters available in sizes ranging from 500 cm2 to 2,000 cm2 providing low hold-up volume and scalability.


Optiseal cartridge filters incorporate a unique sealing mechanism to maximize sterility assurance, improve sterilizability and add greater safety during thermal stress.

Large Area Cartridge Filters

Aervent cartridges provide cost effective sterile gas filtration by maximizing the useful service life, while minimizing the risk of service-related integrity failures. these sterilizing-grade filters are made Teflon PTFE membrane and polypropylene components.

Aerex 2 cartridge filters provide high flow rates at low pressure differentials. Designed to remove bacteria and viruses from moist gas stream, thee filters are ideally suited for use in bulk fermentation applications.

Aerex cartridge filters are designed specifically to withstand multiple steam cycles, forward and reverse pressures, and long-term thermal stresses associated with applications such as fermentation air filtration.

Durapore 0.22 mm hydrophobic cartridges are manufactured to maximize retention and strength. These filters are ideally suited for applications such as product tank vents, where liquid bacterial retention is required.