Reverse osmosis is a water purification process that uses a semi-permeable membrane to separate water molecules from other substances. It works by applying pressure to overcome osmotic pressure that favors even distributions. This process is commonly used to remove a large majority of contaminants from water, including dissolved salts, organics, bacteria, and pyrogens. By pushing water under pressure through a semi-permeable membrane, reverse osmosis effectively filters out unwanted molecules and large particles such as contaminants, sediments, chlorine, salt, and dirt from drinking water. The technology is also capable of removing microorganisms, ensuring that the purified water is clean down to a molecular level, leaving only pure H2O behind. Reverse osmosis is an effective and proven technology for producing water suitable for many industrial applications that require demineralized or deionized water. Overall, reverse osmosis is a widely used and efficient method for water purification, offering a reliable way to obtain clean and safe drinking water.