Gas phase and liquid phase liquid nitrogen tanks are widely used in the field of deep cryogenic storage. However, many people are unclear about the differences in their working principles and usage.
Liquid Phase Liquid Nitrogen Tanks:
In liquid phase liquid nitrogen tanks, samples are fully immersed and surrounded by liquid nitrogen. The advantage of this method is lower temperature and longer sample preservation time. However, when using liquid phase liquid nitrogen tanks, precautions need to be taken to prevent liquid nitrogen from seeping into the tubes, causing an imbalance in pressure inside and outside the tube, posing a risk of explosion.
Working Principle of Gas Phase Liquid Nitrogen Tanks:
The working principle of gas phase liquid nitrogen tanks is quite simple: compressing gaseous nitrogen into liquid form and storing it in the tank, utilizing the evaporation of liquid nitrogen to cool and preserve samples. Users only need to open the valve to release the nitrogen during use. Gas phase liquid nitrogen tanks typically also employ high vacuum insulation technology to reduce the evaporation rate of liquid nitrogen and maintain stable pressure inside the tank.
Construction of Gas Phase Liquid Nitrogen Tanks:
Inside gas phase liquid nitrogen tanks, trays are placed, with liquid nitrogen below the trays and space for sample storage above. This design helps efficiently utilize space and increase the storage density of liquid nitrogen.
Advantages of Gas Phase Liquid Nitrogen Tanks:
Gas phase liquid nitrogen tanks have advantages such as preventing cross-contamination between samples, reducing the risk of sample tube explosions, and low liquid nitrogen loss. Therefore, most storage institutions currently preferentially choose gas phase liquid nitrogen tanks for sample storage.
Selection of Gas Phase Liquid Nitrogen Tanks:
When selecting gas phase liquid nitrogen tanks, attention should be paid to product capacity, quality, and after-sales service. Firstly, choose the appropriate capacity according to actual needs to ensure meeting sample storage requirements. Secondly, selecting well-known brands and reliable quality gas phase liquid nitrogen tanks can ensure stable equipment performance and long service life. Choose a brand that provides comprehensive after-sales service to promptly address any issues encountered during use.
For example, Haier Biomedical's newly designed third-generation liquid nitrogen tank SmartCore series liquid nitrogen storage system can reach a temperature of -190°C at the top of the freezing shelf when in gas phase state.
Gas phase liquid nitrogen tanks, with their efficient, safe, and environmentally friendly features, are playing an increasingly important role in fields such as scientific research, medical care, and biotechnology. Choosing a suitable gas phase liquid nitrogen tank will provide strong assurance for sample storage and research work.
Post time: Apr-02-2024
