Shanghai international my in pudong expo exhibition center open to the public, a lot of concern about the choose and buy of household water purifiers and drinking water health of people rushed to the visit. It is understood that in the face of the market variety, with various stunt for commercial publicity of water purifiers, there's some misunderstanding of choose and buy some consumers.
Myth 1: filtration precision is higher, the better
"My house behind a layer of yellow water to boil, the selection of water purifier?" Water purification at the end of the hall 2 large exhibition hall, a citizen is asking a water purification equipment and technical personnel of the exhibitors. She was holding a set of simple water quality detector on the faucet, the inside of the filter has completely become yellow, told reporters: "a week like this."
According to the scene of a water purifier manufacturers introduce to the delay of technology research and development manager, currently on the market of household water purifier with two uf and RO reverse osmosis technology is given priority to, and a total valve installed in the homes of the three-pass water purification device. On the price, the price of household RO reverse osmosis water purifier in 1000-6000 yuan, ultrafiltration water purifier is in 500-2000 yuan.
Generally speaking, domestic RO reverse osmosis pure water machine is equipped with PP cotton, sintering activated carbon, granular activated carbon, reverse osmosis RO membrane, rear with five level in activated carbon filter, namely appearance see five cylinder number, filtration precision universal claims over 95%, can filter out the heavy metal ions; And ultrafiltration water purifier using ultrafiltration membrane pore size is much bigger than reverse osmosis membrane, thus filtering accuracy is lower, the metal ions, such as powerless.
To the group said, want to choose water purifiers, according to the water quality situation, not blindly pursue high precision filter, hard water, such as the northern region, reverse osmosis membrane can effectively filter out the calcium ion in the water, reduce scale formation; Heavy metal exceeds bid areas suitable for reverse osmosis water purifiers; But improve the quality of the kitchen water, remove the sediment in the water, rust, residual chlorine, colloid, ultrafiltration water purifier is enough.
It is understood that the world health organization definition of health water has a standard is "moderate" essential minerals, filtration and reverse osmosis technology is almost pure water, beneficial to human body such as calcium and magnesium ions was rejected.
Erroneous zone 2: foreign water purifier is not suitable for the Chinese kitchen
Reporter heard before more than one booth, some consumers to buy foreign brand water purifiers, better quality, but worry that the product is in accordance with the local water quality research and development, on the basis of different water quality, whether foreign water purifier can apply to domestic water environment?
According to a us brand water purifiers China merchants to represent zhen-hua yi, European and American countries water purifier is not blindly on the filtration precision, the filter is commonly activated carbon, adsorption impurities, bacteria, residual chlorine, etc. Although is activated carbon, but the difference in quality, as some domestic brands with 5 levels of filtering water purifier, one of the activated carbon for the core of the ex-factory price, or even a few dozen yuan yuan, however, and quick thousands of foreign products, the adsorption effect can vary more than 20 times.
Zhen-hua yi suggestion, if the water pollution is serious, water purifiers in these foreign brands front end with a domestic membrane filter device. Reporters see by several foreign brands of water purifier booth, some products in the ordinary course of monocular (an activated carbon rods) based on the design and put a cone in the front, placket membrane filter is mainly used for filtering water turbidity, etc. "No matter how much strength strong foreign enterprises, is a product of the farmland." According to the sales staff, BSF of foreign brands are produce in targeted according to the Chinese market.
Myth 3: mount water purifier can rest easy
Reporter recently visited several entities shop see, straight drinking water is a lot of water purifier industry concept, but in Beijing to protect healthy drinking water health association professional committee of zhao, director of the flying, tap water by reverse osmosis water purifier or so-called direct drinking pure water machine filtered is risky, because after a period of time of the filtering itself is a secondary pollution, the best water to boil the drinking again. In addition, water purifiers change filter filtering effect can be ensured, and need to frequently or filter could become sources of pollution.
Zhao flying, with 5 levels of filtering reverse osmosis water purifiers, for example, general PP cotton two months need to change a, the use of activated carbon filter cycle is 3 to 6 months, ultrafiltration (UF) with an average of 24 months, the service life of filter element reverse osmosis filter can be used for 36 months. Industry technology, he says, is filter replacement frequency depends on the actual water pollution situation, the industry provides only a rough range, such as consumers find water purifier water flow is smaller than before, or with the TDS (total soluble solids in water, can determine the water content of impurities) test pen that TDS value increase, consider to replace filter.