What are the conditions for performing the reverse osmosis process?

One condition for performing reverse osmosis is that there should be two solutions with different concentrations of solutes. Another condition is to apply external pressure to the solution with the higher concentration of solutes. A third condition for carrying out reverse osmosis is that the solutions must be separated by a semipermeable membrane that allows the passage of water but not solutes. Lastly, the external pressure applied must be greater than the osmotic pressure, which is the pressure required to prevent the net flow of water across the membrane due to osmosis.