We are doing experiments every day. The use of the instrument directly affects our experimental results. The ultra-pure water machine is also the same. We should pay attention to the maintenance during the normal use and after the use. Let's share the maintenance of ultrapure water machine products.

Ultra-pure water machine maintenance:

First of all, simply understand the laboratory ultra-pure water machine, tap water through the precision filter and activated carbon filter for pretreatment, filter the sediment and other particles and adsorption of odor, so that the tap water becomes cleaner, and then through the reverse osmosis device for water purification and desalination, The purified water is stored in the storage tank, and the water quality can reach the national three-level water standard, and the wastewater produced by the reverse osmosis device (also called “concentrated water”) is discharged. Reverse osmosis pure water is subjected to deep desalting treatment through a purification column to obtain first-grade water or ultra-pure water. Finally, if the user has special requirements, ultraviolet sterilizing or microfiltration, ultrafiltration, etc. are added after the ultrapure water to remove residual water. Bacteria, particles, heat sources, etc.

The precision filter element, activated carbon filter element, reverse osmosis membrane and purification column are all materials with relative life. The precision filter element and the activated carbon filter element are actually the protection of the reverse osmosis membrane. If they fail, the load of the reverse osmosis membrane is aggravated and the life is reduced. Short, if you continue to boot, the quality of the pure water produced will decrease, which will increase the burden on the purification column, and the life of the purification column will be shortened. The end result is an increase in the cost of using ultrapure water machines. Therefore, in the use of laboratory ultra-pure water machines, there are the following aspects that need attention.

Water: Ultra-pure water machine with tap water as the water source generally has two water outlets, namely three-stage water and first-grade water. The water that is reverse osmosis is three-stage water, which is stored in the water tank, and the first-grade water is Ready to use, not stored. The tertiary water does not pass through the purification column, and the first stage water passes through the purification column, and the cost of the first stage water is higher than that of the third stage water. Therefore, in daily application, water should be taken according to the water quality requirements. When using three-stage water, try not to use the first-grade water to avoid the rising cost of use.

Precision filter: Precision filter, also known as filter filter, split-line filter and PP melt-blown filter, mainly filter large particles such as sediment in raw water, the filtration accuracy is 5 microns, 1 micron and so on. The new filter element is white. If the surface is long, the surface will be silted, etc., and it will appear brown. This means that the filter element can not be used. After washing the surface sludge with tap water, it can barely continue to use for 1-2 weeks, but it cannot be used for a long time. . The filter element is placed inside the filter bottle. Some filter bottles are transparent. The color change of the filter element can be visually observed. Some filter bottles are opaque and need to be unscrewed to observe the change of the filter element. From the empirical data statistics, the life of the precision filter element is generally from March to June. If there is more sediment in the raw water, the life is shorter, and the sediment and other particles are less, the life is slightly longer.

Activated carbon filter: Activated carbon filter is made of high-quality shell carbon and coal-based activated carbon, supplemented by food-grade binder. It is processed by special technology using high-tech technology. It is adsorbed, filtered, intercepted and catalyzed. The integrated body can effectively remove organic matter, residual chlorine and other radioactive substances in the water, and has the effects of discoloration and odor removal. It is an ideal new generation product in the liquid and air purification industry. Type: white head sintered activated carbon filter, black head with skeleton, sintered activated carbon filter, granular activated carbon filter. There is no intuitive change in the surface of the activated carbon filter. According to experience, it is generally saturated in a year or so and needs to be replaced.

Reverse osmosis membrane: Reverse osmosis membrane is an important part of ultrapure water machine. Its pore size is very small. Therefore, microscopic substances such as bacteria are often deposited on the surface during use. Generally, the pure water machine of each manufacturer has backwashing. Function designed to wash away contaminants. The water consumption can be washed 3-5 times within 10 liters/day. If it exceeds 10 liters, it should be washed several times. If it is not used for a long time (such as more than 1 month), it needs to be taken out and immersed in the disinfectant to avoid the breeding of bacteria. However, the process is troublesome. It is recommended that even if it is not used, it is often turned on with a small amount of water to allow the inside of the machine. The water forms a circulation, and the deposition time of the dead water is minimized. The life of the reverse osmosis membrane is 2-3 years, which is mainly determined by the amount of water used. Therefore, it is necessary to select the matching specifications when selecting.

Purification column: The purification column is sometimes called ultra-purification column according to the customer's water quality requirement. Its function is to deeply desalinate the reverse osmosis pure water, and finally reach the level of first-grade water or ultra-pure water. The principle is ion exchange. The lifetime of the purification column is represented by the resistivity online. Below a certain resistance means that the purification column has expired and is relatively intuitive. In addition to the water consumption resistance, the life of the ion exchange resin and the ion exchange resin itself are particularly important in the production design of each manufacturer.

These are the "ultra-pure water maintenance product introduction", For more information please click to view: ultra-pure water

In 2007, Shanghai Bayu ( ) Industrial Co., Ltd. established an offline supply system for laboratory instruments, MRO industrial products, etc. In 2009, it officially launched an online procurement operation platform.

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