How to buy household water purifier?

After understanding the quality of tap water and the principle of water purifier, we understand that, like air, we have no other good way to deal with impurities in water, just one word - filtration.

So how to choose according to different needs?

1. If you only want to filter impurities, the traditional way is still used for daily drinking water

Prefilter: the most basic, mainly used to protect shower and water heater

2. If only direct drinking water source is required

Simple version: just buy a pure water machine, with protected water heater and shower: pre filter + pure water machine;

Advanced version: prefilter + ultrafiltration + pure water machine (ultrafiltration plays a protective role);

For areas with high potential pollution risk (there are many factories nearby, local governments' inaction in environmental protection, etc.), I prefer to buy reverse osmosis RO type, once and for all, because activated carbon has certain requirements for absorbing organic matter, not 100%, and organic matter is more latent and enriched than inorganic matter, Sometimes it is difficult to identify whether your body has been poisoned, so ro is more reliable for unnecessary damage.

Of course, it can also be selected according to water consumption. If you want to use it for domestic water and vegetable washing, you must buy a water purifier with large overall water production, and consider whether the low water output can be tolerated.

3. If in order to remove residual chlorine

Economic Edition: RO water purifier + bath baby (bath purifier) can be considered only to remove residual chlorine from drinking water and bathing;

Whole house version: central water purifier. However, the price is high, which needs to be comprehensively considered according to the house, according to the location, the whole house waterway, the quality of the filter element, service time and replacement frequency.

4. What are the concepts of reverse osmosis, microfiltration and ultrafiltration when buying a water purifier? In fact, this is the name of four membranes with different pore sizes used in membrane separation method. The complete classification is: microfiltration membrane (MF), ultrafiltration membrane (UF), nanofiltration membrane (NF) and reverse osmosis membrane (RO). The smaller the membrane pore size, the higher the filtration accuracy, the greater the working pressure and the slower the passing speed

Specific precautions during purchase:

1、 Whether there is a product hygiene license.

Users must understand the importance of product quality when purchasing water purifiers. Provisions of the measures for the supervision and administration of drinking water sanitation; It has obtained the hygiene license from the superior health supervision department and met the national drinking water quality standard after being identified by the technical supervision department.

2、 Choosing the right filter element is very important.

The first generation water purifier is mainly filtered by activated carbon and ceramics, which is easy to breed bacteria and pollute the water source, and can not achieve the effect of clean water source; The second generation water purifier uses a variety of artificial polymer membrane filtration, which has a significant effect on removing harmful substances in water, but its fatal defect is to filter out trace elements beneficial to the body. The third generation water purifier adopts nano microcrystalline filter element technology, which solves the defects of the second generation water purifier and filters out harmful substances and heavy metals in water. Therefore, when you choose a water purifier, you must ask about the adopted filtration technology and filter material to see whether it meets your own needs.

3、 Whether there is safe and effective sterilization technology.

The water purification equipment is sterilized in two ways: one is to add disinfectant, which can kill some bacteria, but the disinfectant contains trace chemical components harmful to human health; The second is ultraviolet sterilization. Ultraviolet sterilization technology is internationally recognized as one of the most effective sterilization technologies, because ultraviolet sterilization is safe and efficient, and can quickly kill almost all bacteria; Moreover, ultraviolet sterilization adopts physical principle, does not need any chemical agent, and will not have side effects on human body.

4、 Whether there is a perfect after-sales service system.

After buying some brands, many consumers can't find the maintenance service phone or the address of the maintenance service company. This situation makes consumers helpless and causes a waste of resources. Many water purifiers have become furnishings; The after-sales of water purifier mainly focuses on the replacement of filter element. If the filter element is not replaced for a long time, the water source will be polluted and the water purifier will become a "sewage purifier". When choosing a water purifier, we must choose perfect after-sales service, such as tracking customer information by using the customer service system, prompting customers and the company to replace the filter element, etc.

5、 Choose products with high performance price ratio.

At present, there are many domestic and imported water purifiers with exquisite brands. When selecting, according to their own needs and budget, the domestic price performance is slightly higher, but there are many fake filters. Some filter elements do not meet the national regulations, so it is necessary for businesses to provide professional and authoritative test reports. If you want to know which brands are good, you can chat or leave a message. There is no more introduction here to avoid the suspicion of advertising.

6、 Installation mode

In terms of purification effect, the kitchen type (including those that can be hung on the wall) is generally better than the faucet type, so theoretically, the kitchen type water purifier is more suitable for daily use in families.