Semipermeable membrane cartridge for use with a pressure container

摘要: An improvement in a membrane cartridge for insertion into pressure-resistant container and having central passageway holding permeate collection tube. A is formed, at least part, by spiral winding of laminate leaf comprising semipermeable sheet material, transfer porous grid material. extension on the material sufficient length to encompass circumference when positioned inside container. The may have an outer wrapping water-soluble