Reverse osmosis pure water machine is a pure water machine with reverse osmosis (RO) membrane as the core component. Reverse osmosis water purifier is a device that integrates technologies such as microfiltration, adsorption, ultrafiltration, reverse osmosis, UV sterilization, and ultra purification to directly convert tap water into ultrapure water.

Reverse osmosis membrane is an artificial semi permeable membrane with certain characteristics made by simulating biological semi permeable membranes, and is the core component of reverse osmosis technology. The principle of reverse osmosis technology is to separate other substances from water under the action of osmotic pressure higher than the solution, based on the inability of other substances to penetrate the semi permeable membrane.

The pore size of reverse osmosis membranes is very small, so they can effectively remove dissolved salts, colloids, microorganisms, organic matter, etc. from water.