During the use of liquid nitrogen tanks, incorrect use methods often reduce the service life of liquid nitrogen tanks.

Today KGSQ will tell you the precautions for liquid nitrogen tanks:

Safe use:

1. The liquid nitrogen tank can only be used to fill liquid nitrogen, not liquid chlorine, liquid oxygen, liquid ammonia and other liquid gases;

It is strictly forbidden to collide during use, so as not to damage the high vacuum state of the tank;

3.It is forbidden to use storage tanks as transport tanks, and special transport tanks are required for transporting liquid nitrogen;

4.It is forbidden to use a sealed plug to close the nozzle, so as to avoid accidents caused by the continuous evaporation of liquid nitrogen to form nitrogen gas and the increase of pressure.

Bucket operation:

1. When using the bucket, take it out quickly to avoid reducing the biological activity of the stored samples;

2.After the pail is put into the container, the cover plug should be quickly covered to reduce the consumption of liquid nitrogen;

3.When taking out the bucket, be careful not to scratch the inner wall of the neck tube.

Air circulation:

1. Nitrogen is a colorless, tasteless, odorless, non-toxic gas,

2.In the case of poor ventilation, the evaporated nitrogen will reduce the oxygen content in the room, which is a danger of suffocation to the human body.

3.Indoor ventilation should be strengthened to maintain indoor air circulation.

Replenishment of liquid nitrogen:

Replenish liquid nitrogen in time. Usually, when the liquid nitrogen balance is equal to 1/3 of the full container, it should be replenished in time to avoid reducing the biological activity of the sample.

Note:

 When you don’t know how to judge the remaining amount of liquid nitrogen, you can use a solid wooden stick to measure it. Put the wooden stick into the container, take it out after stopping for 3-4 seconds, and you can see the knot of the wooden stick after standing still for a while. In the case of frost, that is the balance of liquid nitrogen.

Protective neck tube:

 When the container is used for a long time, the inner wall of the neck tube will frost and condense into ice, which can be blown with a hot air blower (such as a hair dryer).

Protective neck plug:

The neck plug is made of polyurethane foam. During use, it should be handled with care so as not to twist the core plug.