HYDREX® Composite membrane tubes are ultra-thin, highly selective, and highly permeable reinforced functional tubes based on a proprietary polyamine polymer. The reinforcement layer is a porous substrate integrated into the structure of the membrane to provide enhanced mechanical properties. The enhanced mechanical properties allow the HYDREX tubes to be produced much thinner than standard extruded membranes, providing higher permeability of polar compounds without sacrificing strength. The HYDREX tubes can be used in applications where high thermal and chemical stability are not required. This includes applications such as conditioning of air and non-corrosive gases. The HYDREX tubes come with three different options for fittings: barbed, compression and push-to-connect.