PTFE Vent Filter, Sterile, 0.2 Micron, 50mm, 6 to 12mm hose BARB, PTFE Vent Filter, Sterile, 0.2 Micron, 50mm, 6 to 12 mm hose BARB, 10/Pk Sterile venting of filling vessels, including culture vessels and CO 2 incubators Venting of holding tanks for sterile, distilled water and liquid culture media