Allows rapid and uniform transmission of oxygen, carbon dioxide and water vapors to stimulate cell growth.

• Non-cytotoxic and sterile - Membranes are free of cytotoxins and also gamma irradiated to assure sterility
• Chemically and thermally stable - Resists a majority of caustic agents and organic solvents as well as exposure to temperatures from -20°C to 80°C
• Easy sample retrieval - membrane is easily pierced by pipet tips
• US Patent # 5,858,770