Ultra-filtration water purifiers are generally relatively inexpensive, can only filter out water such as rust, sediment and other large particles, but for small molecules of dissolved organic carbon (DOC) and heavy metals and other harmful substances filtering ability is weak.
Reverse osmosis water purifier, that is, RO membrane technology filtration, the price is higher compared to the ultrafiltration water purifier, but can effectively filter out harmful substances in the water, the filtered water is basically pure water, and can be a good solution to the problem of limescale, alkali.
Nano-filtration, on the other hand, is a pressure-driven membrane separation process between reverse osmosis and ultrafiltration, which is used to separate substances with small relative molecular mass, such as inorganic salts or small organic molecules such as glucose and sucrose, from solvents. In other words, it allows inorganic salts and certain solvents to pass through the membrane, which is better than ultrafiltration water purifier purification, but less effective than reverse osmosis membrane.
So, if you want to buy a satisfactory home water purifier, then choose Angel reverse osmosis water purifier, is your first choice for quality.
Angier is the earliest and only domestic independent brand focusing on the field of clean drinking water, the enterprise is positioned in the high-end water purification experts, signed the international superstar Gong Li as its global brand spokesman. At present, Angel products have been sold in the United States, Japan and other 65 countries, won the global 200 million people choose. The company was founded in 1987 and has 33 years of experience in the water purification industry.