Precautions for the use of ultrapure water: one center, two basic points

January 25, 2024

One center for ultrapure water use, two basic points

Abstract: In this article, Shanghai Lefeng Marketing Department explained the precautions for the use of ultrapure water, namely “one center, two basic points”. Ultrapure water should follow the principle of out-of-the-box and drain the environment and the effects of the container. To achieve scientific and standardized water use.

Ultrapure water is a very important reagent in the laboratory. Many users' laboratories are equipped with ultrapure water machines. Some users report problems with ultrapure water during the experiment, a large part of which is caused by irregular use. So what are the requirements for the use of ultrapure water? Le Feng believes that the use of ultrapure water should follow:

One center, two basic points

One center: ready to use <br> Ultrapure water does not contain any impurities other than the H+ and OH- dissociated from the water itself. Therefore, it has a very strong solubility, and it is easy to absorb external impurities to cause a decrease in purity. The use of ultrapure water should be as soon as possible, preferably "out of the box". This can avoid all kinds of external pollution as much as possible. So what should we pay attention to?
  • The ultrapure water in the bottle washer is best used only for cleaning. The water in the bottle is usually used for a whole day, not only because of the long-term contact with the air, but also the impurities and pollutants in the air are easily brought into the ultrapure water; and it is difficult to avoid the proliferation of bacteria.
  • When taking water, the initial production water should be discharged first, so as to avoid residual water pollution caused by water interruption.
Two basic points: the environment, <br> container for ultra-pure water, the contaminants in the environment will always attack the water, resulting in deterioration of water quality. Therefore, a good use environment can guarantee the water quality of ultrapure water as much as possible. Le Feng prompts users to pay attention to the following points:
  • Pay attention to the experimental environment, the pollutants in the environment will always absorb water, resulting in water quality decline. There is no independent ultrapure water room. Ultra-pure water machines are placed in large laboratories, which is inevitably polluted by the laboratory environment. For example, the high VOC content in the air in a chemical laboratory can easily lead to excessive TOC in ultrapure water.
  • Even if it is necessary to put it in the laboratory, the ultra-pure water machine should be kept away from the pollution. There was a Le Feng user who reported that the bacterial content of ultrapure water exceeded the standard. After the actual inspection, the user's ultrapure water machine was placed next to the tap water tank, and the water intake was facing the sewer. The microbial content in the environment was extremely high. Everything is fine after the transfer.
  • Air bubbles are generated when water is released. You can follow the principle of bei bi xia liu, so that the ultrapure water will flow obliquely to the wall of the container and then to the bottom of the container.
  • Avoid connecting water pipes at the water intake. Some users add a rubber hose to the outlet of the terminal filter, which makes it easy to use. In fact, this greatly increases the risk of use. This extra pipe is usually not very good in material, and the dissolution is greatly exceeded. The stagnant water in the pipe is in direct contact with the air, which is a paradise for bacterial growth.
What should I do with remote water withdrawal? Le Feng's Genie water handle is wirelessly connected, so how far you want to put it!

We usually use ultrapure water, which needs to be used in a suitable container . Unsuitable containers can also cause contamination of the impurities. So what are the precautions for choosing a container?
  • A clean container can avoid contamination as much as possible. In the final step of cleaning the container, we should wash it with ultrapure water and dry it in an oven. (Some containers are not suitable for drying)
  • Clean containers should be placed in a clean cabinet when they are stored. The separators on the cabinets are cleaned with filter paper and the doors are closed to prevent dust particles from enriching in the air.
  • Containers should be made of low-dissolution materials such as glass and plastic stools.
Shanghai Lefeng reminds you that you can use the first item with water. The water is not standardized, and the experiment has two lines of tears.
I wish you peace of mind.

Keywords: pure water, biochemical analyzer, CLSI, CLRW, 3Q, Shanghai Lefeng, RephiLe, Genie water purifier, Super-Genie water purifier

About Shanghai Lefeng Biotechnology Co., Ltd. Shanghai Lefeng Bio is specialized in the research, development, design and manufacture of high-end water purification and laboratory separation and purification products, and is committed to providing cutting-edge, high value-added innovative products for life sciences and biotechnology. The Lefeng product line includes laboratory pure water systems, Millipore pure water compatible consumables and laboratory separation and purification filtration products. Established ten years ago, Lefeng has established its own brand RephiLe (Ruifeng), with more than 30 patents and multiple software copyrights. Products are sold to nearly 90 countries and regions around the world.
For more information on RephiLe products, please visit: Le Feng official website

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