1, reverse osmosis. 2, ultrafiltration.
Resin water purifier should be a new brand, we recommend that you use the old brand.
Resin water purifier reverse osmosis is currently recognized worldwide as the safest and most scientific water treatment technology, through the reverse osmosis membrane out of the water is basically pure water, that is, there are only water molecules, so it is the safest, so the reverse osmosis machine is also known as water purifier. Ultrafiltration filtration accuracy is next to reverse osmosis, out is not pure water, because the pore size of the ultrafiltration membrane is larger than reverse osmosis, so some manufacturers publicize the ultrafiltration water purifier is a water purifier that can retain minerals, in fact, it is to avoid the light, since it is not pure water, then the water may have a diameter smaller than the ultrafiltration membrane pore size of the bacteria, viruses, chemical pollutants, of course, may also be some of the elements of the human body is good! But in the current water environment, safety is difficult to ensure, how to talk about health? So I think it's better to have a reverse osmosis water purifier. In addition to the above two technologies other than water purifiers are microfiltration machines, is certainly not directly drinkable.
Currently the standard configuration of water purifier in the water purification industry:
The first level: PP cotton, role: filtering large particles of pollutants
The second level: granular activated carbon GAC, role: adsorption of chemical pollutants in the water
The third level: sintered activated carbon CTO, role: further adsorption of chemical pollutants in the water
The fourth level: RO reverse osmosis membrane/ultra-filtration membrane, role: to intercept the pollutants that are not treated in the first three levels
The fifth level: post-activated carbon T33, role: to improve the taste of pure/purified water
Please adopt!