Precautions for daily use of ultrapure water filter

The ultrapure water machine can almost completely remove the conductive medium in the water, and also remove the colloidal substances, gases and organic substances that do not dissociate in the water to a very low level. The resistivity of the ultrapure water produced by the ultrapure water machine should generally be greater than 10 megohms, and the water above 10 megohms is called ultrapure water. Generally, the effluent of ultrapure water can reach 18.25 megohms. The filter elements of ultra-pure water machines are all materials with a relatively long life. Therefore, the following matters need to be paid attention to in the use of ultra-pure water machines: 1. The new filter elements of precision filter elements are white, and if the time is long, the surface will accumulate sediment. Wait, it turns brown, which means that the filter element cannot be used. After flushing the surface sludge with tap water, it can barely continue to be used for 1-2 weeks, but it cannot be used for a long time. The filter element is placed in the filter bottle. Some filter bottles are transparent, and the color change of the filter element can be observed intuitively. Some filter bottles are opaque. From the empirical data statistics, the life of the precision filter element is generally from 3 to 6 months. If the raw water has more sediment, the life is shorter, and the sediment and other particles are less, the life is slightly longer. 2. Activated carbon filter The activated carbon filter mainly removes the odor and organic matter in the water through adsorption. There is residual chlorine in tap water, which has a great oxidation effect on the reverse osmosis membrane, so it must be removed by activated carbon. The activated carbon filter has no intuitive change on the surface. According to experience, it generally reaches saturation adsorption in about a year and needs to be replaced. 3. Reverse osmosis membrane The reverse osmosis membrane is a very important part of the ultrapure water machine, and its pore size is very small, so microscopic substances such as bacteria are often deposited on its surface during use, so wash it several times. If it is not used for a long time (such as more than 1 month), it needs to be taken out and soaked in disinfectant to avoid the growth of bacteria, but the process is troublesome. The water forms circulation and minimizes the deposition of stagnant water for too long. The life of the reverse osmosis membrane is 2-3 years, which is mainly determined by the water consumption, so be sure to choose the matching specifications when choosing. 4. Purification column Purification column is sometimes called ultra-purification column according to customer's water quality requirements. The principle is ion exchange. The lifetime of the purification column is represented online by the resistivity. Below a certain resistance, it is intuitive that the purification column is expired. In addition to the water resistance, the life expectancy is particularly important in the filling amount of the ion exchange resin and the quality of the ion exchange resin in the production design of each manufacturer. 5. The ultra-pure water machine that uses tap water as the water source generally has two water outlets, namely third-grade water and first-grade water. It is ready to use, no storage. The tertiary water did not pass through the purification column, and the primary water passed through the purification column, and the cost of the primary water was higher than that of the tertiary water. Therefore, in daily application, water should be taken according to the quality of water quality requirements. When three-grade water can be used, try not to use first-grade water to avoid the increase in use costs.
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