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Does liquid nitrogen need to be replenished in time

Edit: Henan Tianchi Instrument Equipment Co., Ltd    Date:2019-12-23
The use of liquid nitrogen in life is generally used to preserve samples, such as: frozen, preserved biological samples, laboratory frozen specimens, etc. During the preservation process, we must pay attention to the timely replenishment of liquid nitrogen to avoid the failure of stored items and affect our benefits. .
When is liquid nitrogen supplementation more appropriate? Generally, the remaining amount of liquid nitrogen is 20% of the total capacity, or when it can be used for one week.
There are two ways to determine the remaining amount of liquid nitrogen and how much to add.
1) Liquid nitrogen can put the liquid nitrogen container on the weighing scale;
2) Use a wooden stick to insert the liquid nitrogen for a few seconds. After removing it, you will see a white frost in the part where the liquid nitrogen is inserted.
Related Reading: Precautions For Liquid Nitrogen Output From Liquid Nitrogen Container
Does liquid nitrogen need to be replenished in time