Try to choose regular manufacturers to produce, and the quality is more guaranteed. It is recommended to choose a local brand with a specialty store or a regular point of sale. The products of such manufacturers are more suitable for local water quality, and after-sales service is guaranteed. And you can actually experience the water purification effect offline.
2. Compared with the water purification effect
It is difficult for consumers to observe the water purification effect with the naked eye. It is recommended to consult the merchants and check the relevant test reports to confirm the purification efficiency of heavy metals and organic matter. Consumers should refer to the test report issued by formal institutions. Consumers who buy reverse osmosis water purifiers should focus on water purification efficiency, and it is recommended to buy those with water production rate greater than 50%.
3, see the product certificate, the good security.
The water purifiers of standardized enterprises will be marked with the approval number of hygiene license, the total amount and flow of purified water, the number and name of product implementation standards and other information. Consumers can check the approval number of health license in official website and National Health Commission according to the number, and distinguish the authenticity of the product.
The choice of water purifier can be based on: 1. According to the local water quality, you can observe whether the tap water at home has scale, different colors and smells. You can also search the local raw water source, industry and mining industry, or call the local health department to inquire about the local water quality. Then ask whether the residential property belongs to the secondary water supply and water delivery pipeline, so as to judge the general situation of water quality.
2. According to the demand of domestic water, drinking water in the family can be divided into daily life water without entrance and drinking water with entrance. For domestic water, you can choose whole house clean water, such as central clean water and central soft water. For direct drinking water, you can choose pure water machine or ultrafiltration machine, and then mix with pipeline machine.
3. According to the installation location and space, it is best to buy a household water purifier before renovation, so you can measure the location and size of the water purifier to be installed at home in advance. If it has been renovated, you can consult a professional water purifier and provide the installation location and method of the water purifier as well as reference opinions.
The function of water purifier is to filter harmful substances, such as rust, gravel, colloid, residual chlorine, odor, abnormal color, pesticides and other chemicals, bacteria, impurities, toxins, heavy metals and so on. The harm of these things far outweighs the benefits of trace elements and minerals in your water.
Introduction of water purifier Water purifiers mostly purify water layer by layer through various filter elements (such as PP cotton, activated carbon, reverse osmosis membrane, etc.). ) to achieve the purpose of removing impurities. Tap water passes through PP cotton filter, granular activated carbon filter, PP cotton filter, reverse osmosis filter and post activated carbon filter to remove sediment, rust, colloid, bacteria, suspended solids and other substances in water. Different water purifiers have different purification capabilities.
Due to the different water quality in different parts of the country, when purchasing water purification products, we should choose the corresponding water purification products according to the local water quality. The water quality in the north is hard, and there are many calcium and magnesium ions in the water. You can choose a water softener if you use it, and a reverse osmosis water purifier if you drink it. In the southern region with relatively good water quality, you can choose ultrafiltration water purifier.
The filtration accuracy of reverse osmosis water purifier reaches 0.000 1 micron, which can effectively remove dissolved salts, colloids, microorganisms, organic substances and so on. In the water. The filtration is more thorough, and the water produced by reverse osmosis and nanofiltration is clean, safe and excellent in taste; It can completely remove water, alkali and scale, and the water purification effect is very obvious in the areas where groundwater is used in the north and west. If the water pollution is serious or the water quality is unclear, it is recommended to use this water purifier.
The ultrafiltration water purifier adopts the internal pressure or external pressure filtration technology of hollow fiber membrane, and the filtration aperture accuracy of the membrane reaches nanometer level, and the filtration effect is far better than that of the pre-filter and PP cotton, and even smaller water-insoluble particles such as bacteria, viruses and carbon black can be intercepted and filtered; However, it has no ability to remove organic pollution, chemical pollution, odor, pigments and other substances dissolved in water, resulting in poor taste of treated tap water.
Harm of water purifier The purification ability of the filter material of water purifier will change with the extension of use time. When the filter element is replaced, its adsorption of toxic and harmful substances in water will gradually become saturated. Although it can still meet the requirements of water purification in a short time, it will also cause secondary pollution if it is not replaced in time. Therefore, in order to better protect the safety and health of your household water, it is recommended to replace the filter materials in time.