Liquid nitrogen storage tanks, as key equipment for low-temperature storage, are widely used in scientific research, medical care and industrial fields. Correct operation and regular inspection not only ensure the safety of samples but also extend the service life of the equipment. The liquid nitrogen storage tank manufacturer provides you with the following practical guide to help you use the equipment efficiently and distinguish its quality.
Operating Specifications for Liquid Nitrogen Storage Tanks: Ensure safety and efficiency
Key points of daily inspection
Frosting phenomenon monitoring: Inspect the bottle caps and upper areas of the storage tanks daily. If water droplets or frost are found, it may indicate that the insulation performance of the storage tank has declined. It should be stopped immediately to prevent damage to the samples.
Shell temperature test: Under frosting conditions, touch the shell with your hand. If the upper end is cold while the lower end is hot, it indicates that the evaporation loss of liquid nitrogen is relatively large, and the liquid level needs to be closely observed. If the temperature is uniform, the equipment is in good condition.
Liquid level management: Regularly replenish liquid nitrogen to prevent complete depletion, which could lead to the failure of stored substances. Insert a dry wooden stick into liquid nitrogen for 10 seconds. The length of frost formation can roughly indicate the liquid level height.
Safety operation precautions
Anti-frostbite measures: Wear heat-resistant gloves and goggles during operation to avoid direct contact of the skin or eyes with liquid nitrogen or cold gas to prevent irreversible frostbite.
Avoid confined environments: When liquid nitrogen vaporizes, its volume expands significantly. It is strictly forbidden to seal containers, otherwise it may cause an explosion risk.
Storage environment: Place the storage tank in a well-ventilated and cool area, away from direct sunlight and high-temperature sources, to maintain stable performance.
How to distinguish the quality of liquid nitrogen storage tanks
Static liquid nitrogen storage period: High-quality storage tanks can maintain liquid nitrogen for a long time, reducing evaporation loss. Poor-quality equipment frosts frequently and the liquid level drops rapidly.
Air tightness verification: When opening the bottle cap, if the mist sinks rather than overflows, it indicates good sealing. Fog overflow indicates a potential leak.
Bubble sound detection: Listen for the bubble sounds inside the tank. Frequent bubble sounds may indicate internal structural defects and require further inspection.
Frequently Asked Questions
Q: Why avoid filling liquid nitrogen all at once?
A: Staged pre-cooling can prevent the inner tank from cracking due to sudden temperature changes. It is recommended to inject 1/3 of the capacity for the first time, let it stand for 30 minutes, and then replenish to 2/3.
Q: How to choose cryopreservation containers?
A: Use cryotubes made of low-temperature resistant polypropylene (such as PP), avoid glass containers, and ensure that the labels are laser-engraved to prevent them from falling off.
If you need more customized solutions or technical consultation for liquid nitrogen storage tanks, please feel free to contact a professional manufacturer. We focus on the design and production of high-quality products to ensure that your storage needs are safe and reliable.
