Liquid Helium
Liquid helium is a liquefied form of helium. Colorless, transparent, odorless and tasteless. The critical temperature (5.20K) and boiling point (4.125K) are the lowest. It can obtain MK grade ultra-low temperature, is one of the most important low temperature source.

Liquid helium in the temperature dropped to 2.18 K (He Ⅱ), the nature of the mutations, become a superfluid, can flow upward along the container wall, the thermal conductivity of copper, 800 times and turn it into a superconductor; Its specific heat capacity, surface tension and compressibility are all abnormal. Liquid helium has a density of 0.125 g/mL at one atmosphere.

Technical parameter and specification