The Liquid Ammonia Tanks are necessary container for long-term preservation of breeding stock semen, and the use of liquid nitrogen in the tank allows the sperm to be inhibited in the ultra-low temperature environment at -195.8°C, thus maintaining a good fetal effect for a long time. , conducive to the development of artificial insemination technology. To ensure the safety and effectiveness of its use, the following principles should be observed during operation.
1. Before starting up, carefully check the safety of the liquid nitrogen tank, such as whether the structure is intact, non-destructive, whether the Liquid Ammonia Tanks are dry, and whether there is any foreign matter. After the checkpoint is normal, inject liquid nitrogen into the "vehicle" and observe the cold preservation effect for about 10 hours.
2. When enabled, the liquid nitrogen is injected into the tank, and the qualified freeze-dried granules or fine tube frozen essence are placed in the gauze bag, the string is tied, and the tape is affixed with a tape attached with instructions (ie, the source information of the semen). Squat on the handle outside the tank. The gauze bag can be stored directly in the tank with the lifting tube. The information includes the date of production, variety, breeder number, etc. of the frozen essence.
3. After activation, the Liquid Ammonia Tanks should be placed in a cool, ventilated, and dry place, kept stable, and try its best to avoid any migration. If you need to move, the action should be steady and light, be careful of collision and vibration, pay attention to the protection of the top of the tank and the indexing ring, the best tube sleeve jacket.
4. After the liquid nitrogen tank is started, on the basis of cleaning the tank every year, when the temperature in the empty tank rises above 0°C, wash it with 40°C detergent water once, rinse with fresh water 3~4 times, and use a soft cloth. Wipe, invert and dry before use. If you see the jar of external cream, you should promptly identify the cause and repair it.
5. Regularly check the amount of liquid nitrogen in the tank by taking a smooth stick and insert it into the bottom of the tank for 5 to 6 seconds. Observe the height of the frosted part. The frosted part is the amount of liquid nitrogen in the Liquid Ammonia Tanks. If the liquid nitrogen is less than 1/3, it should be supplemented as soon as possible so as not to affect the preservation effect or to reject the semen.
6. Since the liquid nitrogen is easily volatilized, when uncovering and taking out semen, it strives to be stable, quasi-fast, and generally required to be completed within 3 seconds (referring to when the semen leaves the liquid nitrogen). Immediately close the lid after taking it.
7. Liquid nitrogen is not only easy to make people suffer from frostbite, but also easy to vaporize and injure others. Once it is in contact, it should be shaken off immediately and flushed with water. Wear masks, gloves, overalls, and ventilation during operation.
