Kunshan Gaoqiang Industrial Equipment Co., Ltd.

The Working Principle And Application Of Nitrogen Cabinet

In semiconductors, optoelectronics, precision electronics, and other industries, many components and materials will be affected by moisture or oxidation when they are directly stored in ordinary environments. The physical structure of nitrogen N2 is stable, and the gas with a lower cost is just suitable to be used as the protective gas of the product. Thus, the nitrogen gas cabinet can protect the products that need to be stored in a nitrogen atmosphere.

A nitrogen cabinet storage is a type of laboratory equipment that uses a flow of nitrogen gas to create an inert, oxygen-free environment within an enclosed space. The purpose of this is to protect sensitive materials or samples from exposure to oxygen or other contaminants that may negatively affect their stability, reactivity, or accuracy.

The Dry Nitrogen Gas Cabinets are Mainly Composed of Three Parts:

  • In the part, the surrounding of each door is composed of magnetic sealant strips, and there is also pressed sealant cotton around the glass to ensure the overall airtightness of the cabinet;

  • The pipeline part, nitrogen pipeline-nitrogen flowmeter-nitrogen saving module QDN-pipe enters the dry nitrogen storage cabinet;

  • The circuit part mainly includes a power supply, control panel, and power supply box.

The Materials of Nitrogen Dry Box Storage

  • Cold-rolled steel plus anti-static spray can meet the storage of products in an ordinary environment;

  • Stainless steel (also divided into mirror and brushed stainless steel, click here for more about stainless steel desiccator cabinet ) is mainly used in clean rooms of class 100 and above or in corrosive environments;

Working Process and Principle of Dry Nitrogen Storage Cabinets

To create the nitrogen atmosphere, the dry nitrogen storage cabinets is connected to a nitrogen gas source, usually through a regulator that allows the user to control the flow rate and pressure of the gas. The gas is then fed into the cabinet through one or more small ports or diffusers located at the top of the cabinet. So we need to find out the humidity conditions required for product storage and then set the humidity value through the control panel.

Turn on the QDN. As the nitrogen gas flows into the nitrogen dry box storage, it displaces the oxygen and other gases in the air, reducing the oxygen concentration to less than the setting value.  Then the QDN auto-cut the N2 filling.  This creates a stable, oxygen-free environment that is suitable for a variety of laboratory applications, including the storage of chemicals, electronics, or biological samples.

Nitrogen enters the N2 cabinet, the air in the nitrogen storage cabinet is gradually diluted by nitrogen, and the humidity and oxygen content will gradually decrease. When nitrogen is continuously charged, the pressure in the cabinet will also rise, which will compress the sealing strip and make the original air quickly replaced.In addition, note that the pressure of the external nitrogen should not be too large, and the specific use should be adjusted according to the N2 cabinet specifications.

dry nitrogen storage cabinets

What's the application of Dry Nitrogen Storage Cabinets

Nitrogen gas storage cabinets have several applications in laboratory settings, including:

  • Preservation of sensitive materials:
    Many materials, including chemicals, electronic components, and biological samples, can be sensitive to moisture, oxygen, or other contaminants in the air. By storing these materials in a N2 cabinet, they can be protected from exposure to these contaminants, preserving their integrity and stability over time.

  • Chemical reactions:
    Some chemical reactions can be sensitive to oxygen or other gases in the air, and require an oxygen-free environment to proceed properly. Nitrogen cabinets can be used to create these environments, allowing researchers to conduct experiments with greater precision and control.

  • Semiconductor manufacturing:
    In the production of electronic components, such as microchips and printed circuit boards, it is important to avoid exposure to moisture and other contaminants that can damage the materials. Nitrogen cabinets can be used to create a controlled, clean environment for manufacturing these components, improving their reliability and performance.

  • DNA sequencing:
    In DNA sequencing, it is important to maintain the stability and integrity of the DNA samples throughout the sequencing process. Nitrogen cabinets can be used to store and protect these samples, ensuring accurate and reliable results.

Overall, nitrogen storage cabinets are an essential tool for researchers and scientists who need to protect sensitive materials and maintain a controlled environment for their experiments and processes.