In modern laboratory scenarios such as scientific research, medical, and pharmaceutical fields, the demand for high - purity water is of utmost importance. Whether it is precise chemical analysis, cell culture experiments, or the pharmaceutical production process, the purity of water directly affects the accuracy of experimental results and product quality. Laboratory pure water machines, as specialized equipment for producing high - purity water, play an indispensable role.
WORKING PRINCIPLE
Pretreatment Stage: The raw water first enters the pretreatment system, which usually consists of a multi - media filter, an activated carbon filter, and a water softener. The multi - media filter can remove large - particle impurities in the water, such as sediment and rust. The activated carbon filter effectively adsorbs residual chlorine, organic matter, and some heavy metal ions in the water by using the adsorption property of activated carbon. The water softener removes calcium and magnesium ions in the water through ion - exchange resins, reducing the water hardness and preventing scaling during subsequent treatment processes.
Reverse Osmosis Stage: The pretreated water enters the reverse osmosis membrane module. The pores of the reverse osmosis membrane are extremely small, allowing only water molecules to pass through. It has a high interception rate for impurities such as bacteria, viruses, microorganisms, dissolved salts, and small - molecule organic matter in the water. Under pressure, water passes through the reverse osmosis membrane to become initially purified pure water, while impurities are intercepted on the other side of the membrane and discharged through the wastewater discharge system.
Post - treatment Stage: The reverse osmosis product water then enters the post - treatment system, which generally includes ion - exchange resin columns, ultra - filtration membranes, and UV sterilizers. The ion - exchange resin columns further remove residual ions in the water to achieve deep desalination. The ultra - filtration membranes can filter out remaining tiny particles, bacteria, and macromolecular organic matter in the water. The UV sterilizers use the energy of ultraviolet light to damage the DNA structure of bacteria and viruses, ensuring that the microbial content in the water reaches an extremely low level, and finally producing high - purity water that meets laboratory requirements.
FEATURE
High - Purity Water Production: It can produce ultrapure water with a resistivity of up to 18.2 MΩ·cm, meeting the extremely high water quality requirements of various experiments and production processes.
Stable and Reliable Water Quality: Through multi - stage filtration and precise treatment, the produced pure water has a stable water quality with minimal fluctuations, providing a guarantee for the repeatability and reliability of experimental results.
High Degree of Automation: The entire process from raw water inlet, water production to pure water storage is automatically operated, eliminating the need for frequent manual intervention. Operators only need to set the parameters, and the equipment can operate automatically according to the set program.
Water and Energy Conservation: Advanced reverse osmosis technology and water - saving designs are adopted to effectively reduce water waste while ensuring a high pure water production volume. At the same time, the equipment has low energy consumption during operation, which is in line with the concept of environmental protection.
Easy Maintenance: Each filter component and treatment unit adopts a modular design, which is convenient for disassembly and replacement. The equipment also has an automatic cleaning function, which can regularly clean key components such as reverse osmosis membranes, extending the service life of the equipment and reducing maintenance costs.
APPLICATION
Scientific Research Laboratories: In chemical analysis laboratories, it is used for the preparation of mobile phases for precision instruments such as high - performance liquid chromatography (HPLC) and gas chromatography (GC). In biological laboratories, it provides impurity - free and microorganism - free ultrapure water for cell culture, PCR experiments, protein purification, etc., ensuring that experimental results are not interfered with by water quality.
Medical Field: In departments such as hospital clinical laboratories and pathology departments, high - purity water is required to ensure the accuracy of test results when conducting blood tests, urine analysis, pathological sectioning, etc. In hemodialysis centers, the ultrapure water produced by pure water machines is used to prepare dialysate, which is directly related to the treatment safety and effectiveness of patients.
Pharmaceutical Industry: During the pharmaceutical production process, whether it is the synthesis of active pharmaceutical ingredients, the preparation of pharmaceutical preparations, or the cleaning of pharmaceutical packaging materials, high - purity water that meets the pharmacopoeia standards is required. Laboratory pure water machines can provide a reliable water source guarantee for pharmaceutical research and development and production.
Electronics Industry: In semiconductor manufacturing, chip processing, and other processes, the requirements for water quality are extremely high. Tiny impurities can affect product quality. The ultrapure water produced by laboratory pure water machines can meet the strict water quality requirements of the electronics industry and is used in processes such as cleaning and etching.
