The cryogenic containers used for liquid nitrogen storage are called “liquid nitrogen tanks”, also called liquid nitrogen cryogenic containers!
Double-layer vacuum-insulated construction in aerospace aluminum alloy for liquid nitrogen and biological sample storage use.
What are the requirements for its use?
The requirements for use, i.e., the issues that need attention in the process of use, are divided into the following categories.
1.Filling of cryogenic containers
Liquid nitrogen cryogenic container is room temperature before the liquid nitrogen, compared with liquid nitrogen -196 ℃ low temperature, heat is larger, so the first filling needs to be pre-cooling, filling a small amount of liquid nitrogen to cool the container, and then slowly filled.
This is to prevent the thermal equilibrium time is too long, the loss of liquid nitrogen, but also to protect the inner liner, not harmed by sudden changes in temperature.
After that, in order to reduce the filling loss, the liquid nitrogen should be replenished when there is still 1/3 of the total capacity.
Be careful not to let the liquid nitrogen come into contact with the vacuum nozzle to avoid damage.
2.Transport of cryogenic containers
Mainly refers to the transport type liquid nitrogen tank, storage type liquid nitrogen cryogenic container is not recommended for transport use.
Transportable liquid nitrogen tanks have shockproof support, but for insurance purposes, it is still necessary to fix the container in the car, so as to avoid unexpected situations on bumpy roads, affecting the quality of cryogenic containers, or even damage to cryogenic containers.
3.Inspection during use
In-use inspection is necessary to allow us to detect abnormalities and deal with them in time without affecting the storage of biocontainers.
The container shell can be checked regularly and stopped immediately if frost is found on the exterior.
If the inside of the neck tube is frosted, remove the liquid nitrogen and sample and let it melt naturally without scraping with a knife.
