Celgard Inc., of Charlotte, N.C., announces the commercialization of Liqui-Cel® 6 x 28 Membrane Contactors. The contactor is the only integrally potted membrane contactor device manufactured in this large of a diameter. The integral potting allows the elastometric o-ring seals to be eliminated. The membrane contactor is designed to handle flow rates of 5-to-50 gpm in a single unit. Larger flow rates can be accommodated by piping multiple devices in parallel.