Liquid nitrogen dewar safe use guide
In chemical and biological laboratories, liquid nitrogen dewars (dewar flasks) are widely used. Liquid nitrogen dewars are capable of preserving cryogenic liquids, such as liquid nitrogen, and are commonly used for freezing samples, protective reagents, and biological samples.
However, a liquid nitrogen dewar (www.) is usedmvecryo.com) also has some security issues. This article will provide you with the safety things you need to pay attention to when using liquid nitrogen dewars and provide you with solutions.
1.Choose the right model of liquid nitrogen dewar.
First, choose the right liquid nitrogen dewar for your experimental needs. Liquid nitrogen dewars often come in different capacities and shapes. Large liquid nitrogen dewars can carry more liquid nitrogen, but at the same time are bulkier and difficult to move. Choosing the right dewar can reduce the risk of accidents.
2.Store liquid nitrogen in a well-ventilated room.
Liquid nitrogen is not only flammable and explosive, but it also releases large amounts of oxygen. As a result, a large amount of oxygen gas forms around a liquid nitrogen dewar filled with liquid nitrogen. This can be dangerous, so liquid nitrogen should be stored in a well-ventilated laboratory.
3.Make sure the liquid nitrogen dewar is well sealed.
The temperature inside the liquid nitrogen dewar is extremely low, and there may be leaks of cooling liquid after prolonged use. If the dewar is not properly sealed, the liquid nitrogen will splash and cause severe burns. Therefore, it is important to check the tightness before using a liquid nitrogen dewar and replace the gasket if needed.
4.Avoid handling liquid nitrogen dewars alone.
Liquid nitrogen is prone to severe burns, so be especially careful when handling liquid nitrogen dewars. It's best not to operate the liquid nitrogen dewar alone, but to ask for help to make sure it's all right.
5.Use protective gear.
When handling liquid nitrogen dewars, gloves, face shields, and other necessary protective gear should be worn. These gears protect your ** and your eyes from frostbite and burns. At the same time, it is important to note that liquid nitrogen can cause serious damage to the eyes, so the use of a mask and goggles is necessary.
6.Do not allow liquid nitrogen to come into contact with water.
Liquid nitrogen undergoes a chemical reaction when it comes into contact with water and produces a large amount of gas. This can lead to a container** or a fire. So, when using a dewar, don't let liquid nitrogen come into contact with water or other liquids.
All in all, while liquid nitrogen dewars have a wide range of applications in the laboratory, care must be taken before use. To avoid accidents, it is important to choose the right model of liquid nitrogen dewar, store liquid nitrogen in a well-ventilated room, make sure that the liquid nitrogen dewar is well sealed, avoid handling liquid nitrogen dewars alone, use protective equipment, and keep liquid nitrogen out of contact with water. By adhering to the above points, you can use your liquid nitrogen dewar more safely and protect yourself and those around you.