Cytiva's Whatman PolyVENT disc filters are integral venting filters that work bidirectionally to prevent contamination from entering containers like fermentation vessels during incubation. Draining or filling of incubators, fermentation tanks, and other vessels requires a venting filter capable of preventing bacterial contamination. With an integral PTFE filter membrane, Whatman PolyVENT acts as an industrial air filter media for sterilization† of gases entering bioreactors such as fermentation tanks.

• 0.2 µm hydrophobic PTFE air filters are ideal industrial air filter media
• Validated for 50 steam autoclave cycles; compatible with ethylene oxide (EtO)
• Testable by water break through (WBT) test or bubble point testing
• Passes USP Class VI biosafety tests for plastics
• Manufactured in clean room facilities
• Filtration area 500, 1000, and 2000 cm to support a range of venting applications

Specifications:
• Pore Size: 0.2 µm
• Filtration Media: Polytetrafluoroethylene (PTFE)
• Housing: Polypropylene (PP)
• Vent: On inlet
• Support System: Polypropylene (PP)
• Sterilization: Can be autoclaved at 121°C for 20 minutes (maximum 132°C). Multiple autoclave cycles are possible. However, the responsibility for reuse is with the operator. The device should be protected from cross contamination. An integrity test should be performed after autoclaving. Compatible with EtO sterilization.
• Non-Pyrogenic: non-reactive
• Operating pressure max.: 2 bar - forward direction (29 psi - forward direction)
• Sealing: Heat-fused
• Flow Direction: Bidirectional
• Markings: Laser etch (eff. 1/2023)

†Refers to sterilization by filtration for small sample use which is an industry term for filters of pore size 0.2 um or smaller as referenced in guidance such as EPA Guid