How to buy a household kitchen water purifier?

Household water purifiers can purify tap water and remove various harmful substances in tap water, such as impurities, rust, bacteria, viruses, organic pollution, heavy metal pollution, etc. If you want to buy a water purifier, it is recommended that you first understand the two major technologies in the water purifier industry: reverse osmosis.

Ultrafiltration. Reverse osmosis is recognized as the safest and most scientific water treatment technology in the world, and the water coming out through the reverse osmosis membrane is basically pure water, that is, there are only water molecules, so it is the safest. The filtration accuracy of ultrafiltration is second to reverse osmosis, but it is not pure water, because the pore size of the ultrafiltration membrane is larger than that of reverse osmosis, so some manufacturers advertise that the ultrafiltration water purifier is a water purifier that can retain minerals, in fact, it is to avoid the heavy and light, since it is not pure water, then there may be bacteria, viruses and chemical pollutants with a diameter smaller than the pore size of the ultrafiltration membrane in the water, of course, there may be some elements that are beneficial to the human body, but in the current water environment, safety is not guaranteed, how to talk about health?

So I think it's better to use a reverse osmosis water purifier.

At present, the standard configuration of water purifiers in the water purification industry: first-class: PP cotton, function:

Filters large particulate contaminants. Secondary: Granular activated carbon GAC, role:

Adsorption of chemical contaminants in water. Tertiary level: sintered activated carbon CTO, function:

Further adsorption of chemical contaminants in the water. Grade 4: RO reverse osmosis membrane ultrafiltration membrane, function:

Completely intercept the first three untreated contaminants. Level 5: Post-activated carbon T33, function:

Improve the taste of pure water As for the brand, as long as it is a regular brand, the service and service are guaranteed, and the certificate can be, and the technical content is not high.

Secondly, look at the budget, if the budget is tight, give priority to domestic production. Most of my friends who work in Suning bought Smith and Eco. Then read the post on the Internet, and the friend who does water purification recommends, it is not bad to buy domestic products, among them, Lisheng is mainly for commercial use, and the other few are not much different, mainly to see the service.

My girlfriend and I ended up buying Midea ultrafiltration and Midea RO respectively. Finally, individuals tend to buy in a brick-and-mortar area. Some models on the Internet are products that have been eliminated from the previous generation of technology and are cheap, but laymen like me can't tell them at all.

I bought it in Suning, and if it is the same model, the price is about the same as Double 11.

Look: Fill a glass of water with a glass, look at the light to see if there are any fine substances suspended in the water, and then let it stand for three hours to observe whether there is sediment at the bottom of the cup, if there is, it means that the suspended impurities in the water are seriously exceeded. Smell:

Take a glass of water and sniff it through your nose, if you can smell the bleaching powder (chlorine), it means that the residual chlorine in the tap water is exceeded. Taste: Taste boiled water, if the taste is astringent, it means that the hardness of the water is too high.

Check: Check the kettle at home, is there a layer of yellow scale on the inner wall? If there is, it also means that the hardness of the water is too high, (the content of calcium and magnesium salts is too high).

Lazy choice: buy a water quality detector, more than a dozen yuan, and use half a month to see the color to know whether the water quality is good or bad.

Look: Fill a glass of water with a glass, look at the light to see if there is a subtle potato sock modified substance suspended in the water, and then let it stand for three hours to observe whether there is sediment at the bottom of the cup, if there is, it means that the suspended impurities in the water are seriously exceeded. Smell:

Take a glass of water and smell it with your nose, if you can smell the smell of bleaching powder (chlorine), it means that the residual chlorine in the tap water exceeds the standard. Taste: Taste boiled water, if the taste is astringent, it means that the hardness of the water is too high.

Check: Check the kettle at home, is there a layer of yellow scale on the inner wall? If there is, it also means that the hardness of the water is too high, (the content of calcium and magnesium salts is too high).

Lazy judging choice: buy a water quality detector, more than a dozen yuan, and use half a month to see the color to know whether the water quality is good or bad.