Helium can be purchased from special gas dealers. For example, Nanjing liquefied gas company.

At the same time, you can also buy it directly from the factory that produces helium. Wuhan Newred Special Gas has a large amount of helium for sale all the year round, which can meet your gas demand.

Because helium is not a daily commodity, it should not appear in major supermarkets in real life, and customers in need, such as helium balloons and wedding companies, don't know where to buy helium when needed. Because helium is an inert gas, it does not burn or explode. It is safer and more reliable than hydrogen, but it is a little more expensive. ?

Application of helium gas

Low temperature cold source can be used for ultra-low temperature refrigeration by using the low boiling point of liquid helium. Ultra-low temperature cooling technology is widely used in superconducting technology and other fields. Superconducting materials need to be at low temperature (about 100K) to show superconducting characteristics. In most cases, only liquid helium can easily reach such an extremely low temperature.

Superconducting technology is widely used in maglev trains in transportation industry and magnetic resonance imaging equipment in medical field. After the balloon is inflated, its density is much less than that of air (the density of air is 1.29kg/m3, and the density of helium is 0. 1.786kg/m3), so its chemical properties are extremely inactive. Hydrogen is safer than hydrogen and can be burned in the air, which may cause an explosion.