An RO (Reverse Osmosis) membrane is a semi-permeable barrier that plays a crucial role in water purification by removing impurities at a molecular level. It works by allowing water molecules to pass through while blocking contaminants such as dissolved salts, heavy metals, bacteria, and viruses. The process involves applying pressure to force water through the membrane, separating impurities and producing clean, safe drinking water. RO membranes enhance water quality by reducing Total Dissolved Solids (TDS) and eliminating harmful substances, making them ideal for domestic, commercial, and industrial use. This technology ensures high efficiency in delivering pure and healthy water.