Ro Membrane & Modules for Dupont , 3M , GE,
Reverse osmosis is the process of applying a pressure greater than the osmotic pressure of the solution on the side of the concentrated solution, forcing the water molecules to enter the dilute solution through the semi-permeable membrane in the reverse direction (opposite to the direction of natural osmosis). The semipermeable membrane flows to dilute solutions, while most of the solutes (dissolved solids) cannot pass through the membrane and are trapped.