Use of RO membrane RO membrane is the abbreviation of Reverse Osmosis membrane. Chinese means: reverse osmosis or reverse osmosis. Permeation is a physical phenomenon of water. Due to the difference in the concentration of water, the water permeation mode is from a low concentration to a high concentration, and reverse osmosis, as the name implies, once the water is pressurized, it will flow from a high concentration to a low concentration, which is the so-called reverse osmosis principle. The reverse osmosis water purifier is pressurized on the side of the high-concentration water, so that the water is forced from the high concentration through the RO membrane to the side of the low concentration, thereby achieving the purpose of purifying the water. Since the pore size of the RO membrane is one-fifth of a millimeter (0.0001 micrometers) of the hair silk, it is generally invisible to the naked eye, and the bacteria and virus are 5000 times higher. Therefore, only water molecules and some mineral ions beneficial to the human body can pass. Other impurities and heavy metals are discharged from the waste water pipe. All seawater desalination processes and astronaut wastewater recycling treatments use this method. Therefore, the RO membrane is also called the high-tech artificial kidney in vitro. The RO membrane is used for most of the pure water machine. As one of the filtration devices for pure water purification, it plays a central role in the filtration of tap water to purified water. The RO membrane can effectively remove calcium, magnesium, bacteria, organic matter, inorganic substances, metal ions and radioactive substances in the water, and the crystal purified by the device is clear and sweet. The device is suitable for use in drinking water for households and hotels, hotels, hospitals and other enterprises.