PTFE Vent Filter Options: Sterile or non-sterile Connections: 6 to 12 mm or 7 to 13 mm hose barbs 0.2 or 0.45 micron pore size 50 mm diameter Small Filter Device Resource Documents Sterile venting of filling vessels, including culture vessels and CO2incubators Venting of holding tanks for sterile, distilled water and liquid culture media