Knowledge of liquid nitrogen tank

 

1, always put liquid nitrogen tank in the upright position. Do not tilt, especially when the liquid is in the tank.

 

2, when all the liquid nitrogen evaporated, remove the remaining liquid nitrogen tank residue (frozen tube, tweezers, etc.).

 

3, rinse with water.

 

(1) suck out with a vacuum pump and place the tube at the bottom of the tank.

 

(2) Before use, prepare 1/2 tank of dilution bleach for 0.4 to 0.8 g / l of active chlorine. Add dilute bleach for at least 1 hour, but no more than 2 hours. Rotate all the time, then suck out all the bleach, rinse with at least 1/2 cans and rinse it once with 1/4 cans of water.

 

(3) and other cans completely dry, then add liquid nitrogen. Otherwise, the bottom of the liquid nitrogen tank will have a permanent ice. [Reminder: you can use the bottom of the air blowing pipe to accelerate the evaporation. To

 

4, once completely dry, add liquid nitrogen to the tank 1/3.

 

5, a week after the check. If the level does change, the vacuum jacket is intact and your liquid nitrogen tank can be used to store cells.
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