Whatman HEPA-CAP Vent Filters are high-retention and high flow-rate glass fiber filters that are commonly used in both research and industry to remove particulates from air and gases. High particle retention for high efficiency air and gas filtration Whatman HEPA-CAP Vent Filters are used across scientific, research, and industrial environments in a variety of air and gas filtration applications that require high particle retention and the ability to capture dirt and debris at high flow rates. In-line filter capsules are particularly suitable for sterile venting of fermenters or reaction vessels to prevent airborne particles from entering or exiting the vessel. They are also well suited for tissue culture, in-line filtration, and prefiltration for suction or to serve gas in-line filters. The Whatman HEPA-CAP Vent Filter glass fiber filter media is strengthened by dual lamination with a tough polyester monofilament. The filters are pleated to maximize surface area for high particle retention and high flow rate. The filters are available in a range of different sizes, formats and end fittings. Typical retention efficiency: 99.97% of all particles ≥ 0.3 µm in air Depth filter design: allows for high loading capacity and bi-directional flow Repeatedly autoclavable: at 121°C for 20 minutes (132°C max) Cytiva offers a variety of venting filters. In addition to HEPA air filters, PolyVENT and SteriVENT options are available. Browse Whatman venting filters to find the filter you need.