This reverse osmosis membrane is designed for use in household water purifiers, aquariums, and small commercial filtration systems. It provides a filtration capacity of up to 50 gallons per day under ideal conditions with a rejection rate of approximately 95 to 97 percent. The membrane helps reduce a wide range of dissolved impurities down to 0.0001 microns including salts, heavy metals such as calcium magnesium lead and chromium as well as nitrates and some microorganisms when used as part of a complete ro system.