RO membranes are used in reverse osmosis (RO) systems for the filtration of liquid. Replacement membranes are available in a multitude of sizes and flow rates depending on filtration need. FilterSource has RO system replacement membranes in stock and ready to ship. Multiple manufacturers, speciality sizes and additonal features are also available. For more information on RO membrane filters or to purchase, please contact us with your current part number at 1-800-701-8038 or email sales@industrialfiltersource.com for a quote.