Water purifiers, also known as water purifying machines, can be categorized into RO (Reverse Osmosis) reverse osmosis water purifiers, ultrafiltration membrane water purifiers, energy water purifiers, and ceramic water purifiers based on their structural composition. Today, let's take a closer look at RO water purifiers.

Typically, reverse osmosis water purifiers use a 5-stage filtration system. Here's a breakdown:

In simple terms, the technical principle mainly involves membrane separation filtration technology powered by pressure. This technology originated in the 1960s and was initially used for aerospace research. As the technology evolved, it gradually became available for home use and is now widely applied in various fields.

The pores of the RO reverse osmosis membrane are as small as the nanometer level (1 nanometer = 10^-9 meters), which is one millionth the diameter of a human hair and invisible to the naked eye. Bacteria and viruses are 5000 times larger than the pores of the RO membrane. Under a certain pressure, H2O molecules can pass through the RO membrane, while impurities such as inorganic salts, heavy metal ions, organic matter, colloids, bacteria, and viruses in the source water cannot pass through the RO membrane. This strictly separates the permeable pure water from the impermeable concentrated water, thereby achieving the purpose of water purification. The following is a schematic diagram of the RO membrane principle:

The pure water produced by RO reverse osmosis water purifiers is fresher, more hygienic, and safer compared to bottled water. It is widely used for various purposes: it can be drunk directly or boiled, and the most notable feature is that kettles or electric water heaters will no longer form scale.