MicroFunnel ST filter funnels offer an alternative to costly closed system sterility testing when using an isolator or containment suite 0.45 μm GN6 Metricel membrane or low binding Supor membrane provides a choice for sterility testing applications in the pharmaceutical industry Supor membrane is ideal for testing antibiotic solutions Double bagged packaging ensures easy transfer through airlock Simple squeeze separation design makes membrane retrieval easy. Microfunnel ST Disposable filter funnel, are a convenient and economical choice for sterility testing within isolators.