With the advancement of science and technology and the increasing awareness of people, many experiments, testing reagents or water quality requirements in the culture environment are also increasing. The purpose of the laboratory ultra-pure water machine was to remove impurities from the water as much as possible to achieve the purity of ultra-pure water. The laboratory ultra-pure water machine can generally divide the water purification process into four major steps, namely pretreatment (primary purification), reverse osmosis (production of pure water), and ion exchange (which can produce 18.2 MΩ.cm ultrapure water). ) and terminal processing (production of ultrapure water that meets special requirements). Because the laboratory ultra-pure water machine is easy to use and high in efficiency, it has already been used in the market. However, many users often have no choice when choosing a laboratory ultra-pure water machine. For this reason, I have sorted out the "three-see" selection technique. Look at the amount of water. The manufacturer of pure water machine said that the user should select the specifications of the ultra-pure water machine according to the actual water consumption, and generally follow the principle of 2 times relationship. For example, if the water consumption is 20 liters/day, the product with a specification of 10 liters/hour should be used. If the equipment with too small size is used, it is easy to cause energy consumption and waste, and if it is selected, it will also make Water can't keep up. Second, look at the quality of water. The national laboratory standard water quality is one, two and three. The user should select the grade of the laboratory ultra-pure water machine according to the actual water quality requirements. Third, look at the quality of raw water. The manufacturer of pure water machine recommends that the user should provide the raw water quality status to the manufacturer when purchasing the product, because the process of the ultra-pure water machine is judged according to the quality of the raw water. For example, the water with high salt content needs to adopt two. Stage reverse osmosis process. However, if you choose an ultra-pure water machine that uses pure water as the water source, you only need to provide water quality requirements and water consumption. After the user selects the model, the laboratory ultra-pure water machine can play its role. However, some users have reported that in the process of using laboratory ultra-pure water machine, the reverse osmosis membrane often has scale, which not only affects the quality of the effluent, but also affects the operation of the equipment policy and affects the progress of the experiment. So, what should I do if I encounter scale of equipment? According to relevant experts, the scale of the reverse osmosis membrane of the laboratory ultrapure water machine is mainly because some particles, colloids, metal deposits, etc. in the raw water adhere to the surface of the membrane, and the pressure difference power on both sides of the reverse osmosis membrane during operation of the equipment Incoming water exchange, in the process of continuous exchange, it is easy to cause a large amount of salt accumulation, and scaling will occur for a long time. There are several ways to handle scaling. A method of cleaning with a low concentration of clean water is usually used under normal conditions; if it is severely fouled and difficult to clean, it can be properly immersed for a while before cleaning. The other is that microorganisms such as bacteria need to be treated with NaOH or hydrochloric acid solution. It is worth noting that the concentration of the solution of hydrochloric acid should be suitable because the concentration of the NaOH solution should not be too high, otherwise the RO membrane will be damaged. A laboratory ultrapure water machine technician said that regular maintenance, maintenance and proper cleaning of the equipment are effective measures to prevent scaling. In addition, when using the laboratory ultra-pure water machine, it is necessary to pay attention to the cleaning and replacement cycle according to the manufacturer's instructions. Therefore, regular cleaning of the filter element and membrane elements of the ultra-pure water machine can also prevent fouling of the reverse osmosis membrane. Sweet Potato Pasta With Hemp Seed Sweet Potato And Pasta,Sweet Potato Pasta With Turmeric,Organic Gluten Free Turmeric Noodle,Bio Gluten Free Turmeric Ramen Hebei Abiding Co.Ltd , http://www.hebeiabiding.com