Advanced Gas & Vent Filtration Solutions

Venting & Gas Filtration Solutions for Sterile Processes

Reliable Performance in Venting & Gas Filtration 

Gas and vent filtration plays a critical role in biopharmaceutical manufacturing by protecting both the process and environment from contamination. 

Sartorius offers a comprehensive range of sterilizing-grade gas filters in various sizes and formats, ideal for applications from small single-use bioreactor venting to large-scale, multi-use stainless-steel systems. A wide selection of connector types and O-ring materials ensures compatibility with your specific process needs.

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Gas & Vent Filtration Portfolio

Gas & Air Vent Filters for Diverse Applications

Sartorius offers a broad range of gas filtration media—including PTFE, PES, ePTFE, and glass fiber—to meet diverse biopharmaceutical process needs. 

PTFE membranes provide broad chemical compatibility, making them ideal for critical venting applications. PES membranes offer high flow rates, well-suited for single-use systems. ePTFE membranes deliver excellent thermal stability, and glass fibers support high gas volumes while preventing blockage, maintaining sterility in critical process steps.

 

 Sartofluor®Sartopore Air®Midisart® 2000Sartofluor® HRSartopure® GA
Membrane TypePTFEPESPTFEePTFEHydrophobic glass fiber
Pore Size (µm)0.2 0.2 0.2 & 0.450.20.2
Sterilization ModeSteam (134 °C) or autoclavingGamma (max. 50 kGy)Steam (134°C) or autoclavingSteam (134 °C) or autoclavingSteam (134 °C) or autoclaving
Product FormatsCartridges, capsules, Midicaps® | Maxicaps®Cartridges, capsules, Midicaps® | Maxicaps® Midisart®Disc filterCartridgesCartridges
ApplicationStainless steelSingle-use LaboratoryHigh temperature Prefiltration
 View ProductsView ProductsView ProductsView ProductsView Products

 

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Trustworthy Results With Sartofluor®

The Sartofluor® filter utilizes a single-layer PTFE membrane, which ensures validated sterility and robust integrity testing.

Optimal Venting Performance with Sartopore® Air

Hydrophobic PES membranes are the ideal choice for sterile venting of your single-use systems, outperforming all PVDF filters in the field.

Midisart® 2000 Small-Scale Venting Filters

Our most popular filter, the Midisart® 2000, is available in a range of variants that offer optimal solutions for every application.

High-Temperature Air Filtration With Sartofluor® HR

Reliable high-temperature air and gas filtration using an ePTFE membrane—ideal for water for injection loop venting.

Uncompromised Air Flow Rate With Sartopure® GA

Efficient particle removal from air streams, with outstanding flow rates of nearly 40 m³/h at a differential pressure of only 10 mbar.

Supporting Products & Services

Single-Use Assemblies for Filtration

Pre-sterilized filter assemblies consisting of air and gas filters, pre-connected tubing, and aseptic connectors for sterile connection.

Explore Air Filter Housings

Discover individually configured housings and specialized accessories for air and gas filtration applications.

Venting Filter Housings

Designed for sterile air and gas filtration in bioprocesses, these housings meet sanitary requirements and ensure reliable performance.

Removable Filter Housing Heaters

Our removable housing heaters are used in conjunction with sterile vent and process filter housings for superior thermal control.

Extractables and Leachables Testing

Ensure the safe adoption of single-use systems in biopharmaceutical processes.

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Learn More About Gas & Vent Filtration

Brochure

Filter Portfolio Overview

Browse our diverse selection of bioprocess filters.

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Tailored Air Vent Filters for Pharmaceutical and Biotech Industries

Sartorius offers a comprehensive range of integrity-testable, validated gas and air vent filters specifically designed for pharmaceutical and biotechnology applications. We possess strong expertise across advanced membrane technologies, such as hydrophobic PTFE, PES, ePTFE, and glass fibers, ensuring effective filtration. 

Our filters are available in sterile packaging to support contamination-free use. A wide selection of formats, filtration areas, connectors, and O-ring materials allows precise fit and performance across a variety of applications, including filling vessels, fermentation carboys, CO₂ incubators, bioreactors, freeze dryers, WFI tanks, and more—ensuring robust protection throughout biopharmaceutical processes.

Frequently Asked Questions

Gas and air vent filters are used in a wide range of applications, including vessels for filling and transfer, fermentation carboys, cell culture chambers, CO₂ incubators, storage tanks, autoclaves, bioreactors, freeze dryers, WFI tanks, heated filter housings, mixing tanks, and PUPSIT setups. Each application requires sterile venting and effective particle removal to ensure product integrity and maintain process efficiency.

Gas and air vent filters protect filtration processes by ensuring sterile conditions and preventing contamination. They remove microorganisms and particulates from gases entering or exiting tanks or bioreactors, maintaining product integrity and quality. By controlling pressure and airflow, these filters help prevent the ingress of contaminants, ensuring reliable and efficient biopharmaceutical production.

Gas filters use hydrophobic PTFE membranes provide excellent chemical resistance and water repellence, making them ideal for sterile gas filtration. PES membranes offer high flow rates and are well-suited for single-use applications. ePTFE membranes support high-temperature air filtration, while glass fiber media help prevent blockage in high gas volumes. These membrane types ensure effective filtration and sterility across biopharmaceutical processes.

Gas and air vent filtration involves removing microorganisms and particulates from gases entering or exiting equipment to maintain sterile conditions and prevent contamination. In industrial applications, it is used in processes such as fermentation, bioreactor venting, and compressed gas filtration. These filters help regulate ambient pressure while protecting product integrity, making them essential in pharmaceutical and biotechnology manufacturing.

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