Water purifier filter replacement cycle standard is difficult to determine

In the entire water purifier market, well-known brands of water purifier filter elements in home appliance stores are generally marked with the life of the filter element. However, for the filter elements of more small brand water purifiers on the market, most of them still do not have the filter element marked with the service life. HaoNature water purifier brand hollow fiber ultra-filter has a service life of three years and has been marked. The replacement standard of water purifier filter element is not uniform. The author found in the market research interview that although the merchants listed the life standard of water purifier filter element: the replacement cycle of activated carbon filter element is half a year, and the replacement cycle of PP cotton filter element is 3 to 6 months. The replacement period of quartz sand filter element is 1 to 2 years, the replacement period of ceramic filter element is half a year to one year, the replacement period of softening filter element is half a year, the replacement period of hollow fiber ultrafiltration membrane filter element is 3 years, the replacement period of reverse osmosis membrane is 3 years, etc. , but these are mostly just a vague conceptual standard. Many consumers have said that the water quality is different in different places, and the frequency of people's use is also different. It is difficult to judge how to calculate the use time of the filter element and how to control the capacity of the filtered water. It is difficult to determine the replacement standard of the filter element. The current water purifier products are mostly equipped with 2 to 6 filter elements. Unlike TV refrigerators, the water purifier filter element cannot be used once and for all. However, it is difficult to measure how the service life of the filter element is replaced, and water purifier manufacturers are reluctant to pay more attention. A person in charge of the Home Appliance Repair Industry Association said so. In fact, in June this year, the Ministry of Health conducted a random inspection on some imported small water purifiers. It was found that 8 companies, including 3M, Mitsubishi, and Panasonic, and 11 models of products were unqualified. The reporter also learned from the quality supervision department that the supervision and sampling of the water purifier by the supervision department is mainly concentrated on the big domestic brands. Among them, various types of activated carbon filter products found that the unqualified rate of products was relatively high, and the reasons included the unqualified soaking test of total dissolved solids, aluminum and arsenic indexes. In this regard, some water purification equipment experts also pointed out that the service life of the water purifier filter element is only for the water in a certain place as a standard, and this standard is definitely not suitable for all parts of the country. If the water quality in the south is used as the standard, it will be lacking in the north; if the water quality in the north is used as a reference, the water quality in the south will be a little too high, which itself has a lack of standards.
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