Reverse osmosis and ultrafiltration differ a great deal. Reverse osmosis is ready to reject dissolved minerals with the water, Whilst UF only filters solids or particulate. Reverse osmosis is ready to get out dissolved inorganic minerals which will pass through the UF membrane. Routine maintenance on this underneath-sink RO http://augustbubif.livebloggs.com/484534/the-best-side-of-water-filter-blog