Recently, foshan city, guangdong province water purification machine popular in the market, this phenomenon is cause the attention of Asian fluid network. Recently several water pollution incident in the pearl river delta scares around guangdong people, to buy water purification machine. Worries about water quality become the main reason of the water purification machine is popular.

　　Although the water purification machine sales, brand much and miscellaneous, but there was no unified standard to measure the water purification ability. From July 1, 2012, drinking water health standards to enforce the new life in China, the new standard testing index reached 106. Although the water quality standard, water purification products has not unified standard, multiple departments, multiple industries to develop a different standard of water purification machines, merchants and consumers don't know how to choose. Such as RO (reverse osmosis) water quality processor (RO pure water machine), the ministry, the state oceanic administration, the ministry of health, environmental protection and so on all have their own industry standards (or specification) combined with the GB/T19249 national standards, etc., with a total of seven criteria, the contents and requirements of the standard also have differences. So, will lead to household water purification machine in a cluttered market, lack of technical standards and guidelines.

　　In addition, for household water filters using materials, filtration materials and related parts and no unified standard. The manufacturing of key parts such as filter water purification machine also lack of unified standards, consumers not guaranteed in the after-sales service, not only difficult to match the size, and it's easy to be bad on filter price corporate fraud.

　　Accordingly, relevant personage says, the choose and buy the filters in the first place to look for the "water group", namely each batch of the filters should have hygiene license, don't have the certificate, produce was doubtful whether the water safety and health. Second, before buying, to know what their drinking water belongs to the first type, is suitable for what kind of water purification machine. Water purification machine currently on the market there are two of the most common, is a kind of ultrafiltration membrane as the core of ultrafiltration water purification machine, another is the RO membrane (reverse osmosis membrane) of pure water machine. Ultrafiltration membrane pores is less than 0.01 microns, and RO membrane filtration precision of 0.0001 microns. Ultrafiltration membrane can filter some impurities, such as silt, rust, suspended solids, etc., but the processing water amount is larger. Calcium and magnesium ions and heavy metal, radiation and so on need RO membrane as the core of the filters to filter. The disadvantage of reverse osmosis membrane is deal with less water, water rate is slow.