Osmosis is a natural process where solvent molecules from a less concentrated solution flow through a semi-permeable membrane to a more concentrated solution. Reverse Osmosis (RO) reverses this flow by applying external pressure greater than the osmotic pressure, forcing water molecules to pass from the concentrated side to the dilute side.
At the heart of the system is the RO membrane, with an extremely small pore size (typically around 0.0001 microns). This advanced membrane acts as a high-precision filter, effectively removing a wide range of impurities such as bacteria, viruses, heavy metal ions, organics, and dissolved salts, while allowing only pure water molecules to pass through, resulting in highly purified water.