How should we choose a laboratory ultrapure water machine?

　　In the laboratory, the reagents that our friends who do laboratory tests come into contact with frequently are pure water, ultrapure water or distilled water, which usually run through our entire experimental process. In modern experiments, water in laboratories is increasingly playing an irreplaceable role. As a basic configuration of instruments, it is also widely used in laboratories. In the past, we often equipped distillers. Now, distillers are gradually being replaced by more energy-efficient and environmentally friendly ultrapure water machines. So how do we choose laboratory ultrapure water equipment?

　　Foreign ultrapure water brands are generally quite expensive. They are more suitable for the water supply conditions abroad, but the tap water they produce usually cannot meet the water supply requirements of foreign ultrapure water machines. They often suffer from water and soil incompatibility, frequently need to replace consumables or experience machine malfunctions. The replacement of consumables for imported brand ultrapure water machines is also very expensive. I believe that colleagues in the laboratory all share the same feeling. So, for ultrapure water machines, choose domestic ones(Beijing Yuanlai Water Treatment Equipment Co., Ltd. has been providing ultra-pure water equipment for many years.

　　How to judge the quality of a laboratory ultrapure water machine?

　　The development of modern experimental technology is extremely rapid. Precise experiments require increasingly high-purity reagents, and the control and interference factors are subject to increasingly strict environmental protection requirements. Experimental techniques are becoming more diversified and multi-directional laboratories are emerging. At the same time, in accordance with the requirements of data verification, repeatability, traceability, test procedures and processes, but with the demand for simple and faster experimental results. Correspondingly, the development of modern experimental techniques for experimental equipment has also put forward increasingly higher requirements: the quality of laboratory instruments is required to be higher and more stable;The instrument functions are integrated, and the machine can meet various demands;The monitoring system of the experimental device should be more complete and reliable, and at the same time, it should have a scientific data management system;In operation, we need to be smarter, more convenient, more comfortable and easier to maintain;In addition to the performance of the instruments and the reduction of the burden on the environment, the value of laboratory workers is also increasing.

　　The inherent development demands of modern experimental science have guided the development direction of modern instruments. Whether it meets the intrinsic demands of modern experimental instruments is the criterion for us to evaluate the performance of an experimental instrument. When it comes to pure water instruments, the quality of produced water, operational comfort, scientific monitoring, and intelligent integration are the aspects we need to consider.

　　Before making the right choice of laboratory ultrapure water equipment, we should have a good understanding of the following concepts: What is pure water? What is ultrapure water? What's the difference between the two?

　　Pure water, also known as purified water, refers to water that is made from water that meets the hygiene standards for domestic drinking water through methods such as electrodialysis, ion exchange, reverse osmosis, distillation, and other appropriate processing methods. It contains no additives, is colorless and transparent, and can be drunk directly. Some of the bottled water and distilled water sold on the market fall within the category of purified water.

　　Ultrapure water is water that, on the basis of pure water, has almost all conductive media in the water removed, and to a very low extent, colloidal substances, gases and organic matter that do not dissociate in the water have also been removed. The resistivity is equal to or close to18.25MΩ.cm(25℃Limit value.

　　The differences between pure water and ultrapure water lie in many aspects. Here, only some of them are listed and summarized as follows:

　　A.The conductivity varies. The conductivity of pure water is generally within2-10us/cmBetween them, the electrical conductivity of ultrapure water is0.056us/cm; The indicators such as organic matter and particle count also vary greatly. For instance, the organic matter in pure water is only a few dozenppbThe above, while there are several types of ultrapure waterppbAt present, it can be achieved to be less than5appbOnly some are imported and domestic. To put it simply, there are no impurities in ultrapure water, which is close to theoretical water.

　　B.The difficulty of manufacturing varies. Currently, the pure water used in the market is basically produced through reverse osmosis and distillation methods, while ultrapure water is made on the basis of pure water and also undergoes ultraviolet oxidation technology.185nm"EDIIt is produced through a series of complex purification techniques such as continuous electro-deionization technology, decarbonization technology, polishing nuclear-grade resin treatment, microfiltration or ultrafiltration.

　　C.The application scope in experiments is different. Common analytical ultrapure water equipment, precision ultrapure water meters, trace organic models andTOPSeries of ultrapure water machines, etc.

　　Reasons to choose Beijing Yuanlai Ultrapure Water equipment

　　1Yuanlai Company is a large-scale manufacturer of ultrapure water projects and laboratory ultrapure water equipment, with reliable quality and high cost performance.

　　2We offer services, provide refined management solutions for equipment systems, establish exclusive customer files, develop solutions, and provide long-term technical guidance.

　　3The service model of a long-established store for many years---The machine is subject to lifetime maintenance, and you can enjoy upgrade services and trade-in services.