Semi-permeable polymer membranes in the form of films for use in liquid, fluid, slurry or water filtration apparatus; semi-permeable polymer membranes in the form of films for use in liquid, fluid, slurry or water filtration apparatus to exclude substances such as contaminants, chemicals, pharmaceuticals, pesticides, and endocrine disrupting substances; all the foregoing goods being made of polymers including natural polymers, synthetic polymers, or a combination of natural and synthetic poly...

Semi-permeable polymer membranes in the form of films for use in liquid, fluid, slurry and/or water filtration apparatus; Semi-permeable polymer membranes in the form of films for use in liquid, fluid, slurry and/or water filtration apparatus to exclude substances such as contaminants, chemicals, pharmaceuticals, pesticides, and endocrine disrupting substances; all the foregoing goods being made of polymers including natural polymers, synthetic polymers, or a combination of natural and synthe...