What are the requirements for a laboratory water purification system?

Generally, the conductivity is required to be less than 10 microsiemens per second

pH is neutral.

Concentrations of impurities, elements, and compounds in pure water are often required to be at or even lower ppb levels. High performance liquid chromatography (HPLC) for trace analysis requires ultrapure water with very low organic contaminant content as a mobile phase component. In general, trace analysis requires that pure water must not contain detectable substances and that any potential interferences be separated from the water.

Our laboratory does gas chromatography and liquid chromatography heavy metal testing, so purified water will also regularly test organic solvents such as methanol and ethanol and tested substances.

Laboratory ultrapure water equipment, simply put, is the equipment used in the laboratory to produce ultrapure water used in experiments. Due to the different water quality requirements for different experiments, laboratory ultrapure water equipment should also be able to produce a variety of pure water or ultrapure water of different specifications.

The laboratory pure water system has high requirements for inlet water quality and produced water quality, and the equipment can be automatically controlled, automatically maintained, and tested for water quality, monitoring water quality changes at any time, and in line with the personalized design of local water quality, to meet the water demand in an all-round way.

The common process flow is: pretreatment, first-stage reverse osmosis, dosing device, intermediate water tank, second-stage reverse osmosis, pure water tank, pure water pump, EDI device, ultraviolet sterilizer, precision filter, water object.

The laboratory water purification system depends on what requirements you have, you can look at Andaz first.

Laboratory water purification systems typically have the following requirements:

Water quality: Pure water systems need to be able to produce high-purity water to meet the needs of the experiment. In general, laboratory water purification systems should be able to remove impurities such as ions, dissolved solids, organics, and microorganisms from water to meet specific water quality standards.

System Collapse Design: The design of a pure water system should take into account factors such as the water demand of the laboratory, the water quality requirements, and the space constraints of the laboratory. It usually includes components such as water source, pretreatment unit (such as reverse osmosis, ion exchange, activated carbon filtration, etc.), water storage device, disinfection unit, and water delivery system.

Operational stability: The pure water system should have stable and reliable operation characteristics, and be able to continuously supply pure water that meets the requirements for a long time. It should be able to automatically monitor water quality and make the necessary adjustments and maintenance to guarantee the proper functioning of the system.

Cleaning and maintenance: Pure water systems need to be cleaned and maintained regularly to ensure they are working properly and have a long lifespan. The cleaning process should follow the relevant operating procedures, and use appropriate cleaning agents and disinfectants to remove dirt and spine and kill bacteria.

Safety: The pure water system should be safe and reliable to ensure that the operator and the experimental sample are not contaminated with harmful substances. Necessary safety measures should be taken, such as preventing leakage, restricting operating authority, and equipping emergency shutdown devices.

It is important to note that the needs and requirements of different laboratories may vary, so when selecting and designing a pure water system, it needs to be adjusted and configured according to the actual situation. It is advisable to consult and cooperate with a professional supplier or engineer to ensure that the pure water system meets the specific needs of the laboratory.

The requirements of the laboratory pure water system mainly include the following aspects:

Purity requirements: Laboratory water purification systems need to produce high-purity water to meet experimental and analytical requirements. Water is usually required to have a resistivity of megaohms centimeters (m·cm) or higher, and to remove organic and inorganic contaminants, microorganisms, etc.

Applicability: The laboratory water purification system should be suitable for different types of experimental and analytical needs, such as biochemical experiments, cell culture, molecular biology, etc. It should be able to provide water of different purities, such as ultrapure water, purified water, etc.

Stability: A laboratory water purification system should have consistent performance that consistently produces high-purity lead water and consistent water quality. It should be able to automatically monitor and adjust water quality to adapt to changes in experimental needs.

Easy to operate: The laboratory water purification system should have a simple and easy-to-use operation interface, which is convenient for experimenters to operate and maintain. It should be able to automate water quality monitoring and maintenance tasks, as well as provide alarm and fault diagnosis capabilities.

Safety: The laboratory water purification system should have safety performance to ensure the safety of the experimenter. It should be able to protect the water from external contamination and have safety features such as water leak protection and filter clogging protection.

Economical: Laboratory water purification systems should be economical, taking into account both the purchase and installation costs of the equipment, as well as the operation and maintenance costs. It should be able to use water efficiently and be energy-efficient and environmentally friendly.

How to choose ultrapure water equipment for laboratory, let's talk about how to choose a suitable ultrapure water equipment for laboratory based on my practical work experience.

2. Four-stage enhanced pretreatment design to improve the quality of reverse osmosis influent water.

3. It has the design of intelligent reuse process of concentrated water, and the water utilization rate is as high as 75% 4. The automatic pulse flushing program design of the R0 system effectively reduces the risk of membrane fouling.

5. The purification system has the function of automatic circulation and rinsing to avoid the breeding of microorganisms.

6. One machine is multi-purpose, and can provide III III water that meets laboratory standards at the same time.

7. Support the function of quantitative, timing and qualitative water intake, and the water intake parameters can be flexibly adjusted according to actual needs.

8. It has the functions of system alarm display, consumables replacement reminder, use time accumulation, historical record query and so on.

How to choose laboratory ultrapure water equipment, it is recommended that you refer to the following three points:

1. Analysis of self-water demand: including raw water quality analysis, effluent water quality analysis, self-water consumption analysis, equipment floor area, installation site confirmation, pipeline layout, etc., on the basis of careful analysis of the above points, we can correctly select the appropriate pure water equipment.

2. Analysis of the strength of the manufacturer: the current water treatment manufacturers are particularly many, many businesses are not practical, and need to consider before choosing: the actual plant area of the manufacturer, the number of companies, the technical team, the brand influence, the installation case, various qualification certifications, etc., and the choice of powerful manufacturers can ensure product quality and after-sales service.

3. Product analysis: the same water output, will also be differentiated because of different manufacturers, first of all, we need to understand where the differentiation is, and the selection of pure water equipment needs to pay attention to the core components of the product.

The laboratory pure water system is a kind of pure water equipment used in the laboratory, which is mainly used for biochemical experiments, analytical tests, chemical synthesis and other experiments that require the use of high-purity water containing Changsui. Through a series of water treatment technologies, the system removes microorganisms, ions, organic matter, particulate matter and other impurities from tap water or other water sources to produce an extremely pure water quality. The laboratory pure water system is generally composed of a pretreatment system, a reverse osmosis system, an ion exchange system, an ultraviolet lamp sterilization system, etc., and the corresponding configuration scheme can be selected according to the experimental needs.

The laboratory water purification system can ensure the accuracy and reproducibility of the test data, and it is one of the indispensable experimental equipment in modern laboratories.

However, ultrapure water has a very low ion content and high requirements for the environment, operation methods, and measuring instruments, and any improper operation may affect the measurement results, so it is also important to choose the right laboratory ultrapure water machine among many laboratory construction brands. As a well-known enterprise in the laboratory industry, Big Oak Group, a professional service provider deeply engaged in the field of smart laboratories, provides ultrapure water equipment for laboratories, so that the decisive experimental material ultrapure water has quality assurance and can obtain high-quality detection data.

The laboratory water purification system is to pass ordinary tap water through a series of physical, chemical and biological treatment technologies to remove harmful, toxic and harmful microorganisms and other substances in it, so that it can meet the pure water standards required by the laboratory. The pure water system of the laboratory is usually composed of multi-stage filtration, reverse osmosis, ion-exchange, ultraviolet sterilization and other technologies, which can be used in various laboratory experiments, pharmaceutical, chemical analysis and other fields to ensure the accuracy and reliability of experimental data.

In the design and construction of laboratory ultrapure water system, Big Oak Group can deeply understand the special needs of laboratory researchers and scientific research projects, and tailor a professional pure water equipment system, which has the advantages of energy saving and environmental protection, simple operation chain, convenient maintenance, long service life, etc., and is an ideal equipment for preparing high-purity ultrapure water.

There are four grades of pure moisture in the laboratory, namely:

1. Distilled water

One of the most commonly used pure water in laboratories, although the equipment is inexpensive, is extremely energy-intensive, water-intensive and slow, and the application will gradually decrease. Distilled water removes most of the contaminants in tap water.

2. Deionized water:

Ion exchange resins are used to remove anions and cations from water, but there are still soluble organic matter in the water, which can contaminate the ion exchange column and reduce its efficacy, and deionized water is also easy to cause bacterial reproduction after storage.

3. Reverse osmosis water:

Reverse osmosis water overcomes many shortcomings of distilled water and deionized water, and the use of reverse osmosis technology can effectively remove impurities such as dissolved salts, colloids, bacteria, viruses, bacterial endotoxins and most organic matter in water.

4. Ultrapure water

Ultrapure water is not the same in terms of TOC, bacteria, endotoxin and other indicators, and it should be determined according to the requirements of the experiment, such as cell culture has requirements for bacteria and endotoxin, while HPLC requires low TOC.

It is divided into four levels 1, and the conductance of ordinary pure water is below 5.

2. The purified water conductance is below 2.

3. The conductance of ultra-pure water is greater than 10 in the following resistances

4. The resistance of high-purity water conductance is about 18 below

Medical and biological use is generally common, 4, most of them are used in the field of electronics.

Laboratory ultrapure water equipment mainly has the following characteristics:

a. Imported ion filter membrane and high-pressure, silent pure water pump are adopted, the operation quality is more reliable, and the water quality is more extensive;

b. It has the function of system flushing: before turning on the water every time, the system will automatically rinse for 18 seconds before the system starts to produce water;

c. With system protection function: when the water pressure is too low or there is no water, the equipment will automatically stop, and the equipment will automatically start when the water source comes from the source;

D. High output, low energy consumption, low electricity consumption, water output of 20L h, power consumption is only 50W, and power consumption is 1 300 of similar products;

e. Using advanced water treatment technology, the proportion of high-purity water is about 40%, and the water consumption is low;

f. No need for electric heating pipe heating, no scaling, no need to clean;

g. No heat loss, the room temperature of the effluent does not need to be cooled, and it can be directly used in the experiment;

h. Simple operation, easy maintenance, low operating cost;

i. It has a two-stage RO pre-desalination system (high salt content water quality selection);

j. It has the function of upgrading water quality and water quantity.

Advantages of reverse osmosis machine:

Two-stage reverse osmosis water treatment equipment.

The process is suitable for pharmaceutical water, chemical process water, medium pressure boiler water supplement, biochemical process water, medical and health water, pure water for electronics industry, cleaning and cooling water for machinery industry, smelting water, and civil pure water. It is mainly equipped with raw water tank, raw water pump, mechanical filter, activated carbon filter, precision filter, dosing device, primary reverse osmosis host pump, primary reverse osmosis host, cleaning device, secondary dosing device, secondary reverse osmosis host pump, secondary reverse osmosis host, fresh water tank, fresh water pump, pure water tank, pure water pump, ultraviolet sterilizer, etc.

First of all, look at the product quality, performance and effluent parameters, which can not only listen to the manufacturer's propaganda, but also need to go to the field for testing. In fact, although there are many manufacturers, there are still very few that do well, and I will introduce you to a few pure water brands that have done well, including Merck Millipore and Thermo Fisher Thermo Thermo in imports, the product quality is good, and the problem is really expensive. The domestic brand has always been proud of the technical advantages of the German R&D center, using the German R&D and domestic production model, which is the same as the American Thermo Fisher Scientific (domestic production), the product performance is the same as that of imports, but the advantages are obvious, and it is currently selected by many customers as a substitute for imported products.

The second is to pay attention to the after-sales service of the manufacturer in the process of purchasing ultrapure water machine, such as what kind of after-sales service mode is adopted, is it the manufacturer's direct after-sales service, or the third-party dust after-sales service? Of course, it is more secure for the original manufacturer to provide after-sales service directly, because the manufacturer's engineers have a better understanding of the situation of each component of the equipment, and will also better understand the needs of users, so as to deal with product after-sales problems more quickly and scientifically. There is also the after-sales response speed, maintenance cost, whether it will take the initiative to return to the user, etc.

Finally, users must be clear about their water needs before choosing a laboratory celery ultrapure water machine manufacturer, because the first element of selection is suitable. However, many customers are not very clear about the pure water needs of their laboratories when purchasing consultations, and if you meet a professional manufacturer, you will patiently help you sort it out, if not, it is easy to buy a pure water machine that does not meet your own water standards.