This Standard Size Reverse Osmosis Membrane fits in a standard membrane housing. There is a wide range of inorganic compounds that can be removed from drinking water with this reverse osmosis membrane.  Reverse Osmosis Membrane removes major contaminants from your water and provides clean water for all home uses. Start drinking healthy and stop drinking contaminants in your own home Reverse Osmosis Water Purification. The membrane focuses on the most difficult to remove contaminants found in water. Rejects a wide spectrum of impurities down to .0001 microns. 50 gallons per day – production rate under ideal conditions 95-97% rejection rate.