Compressed Helium Gas and Liquid Helium What is helium? Because of its inertness and very low density, compressed helium gas and liquid helium are extremely versatile in their uses. Helium (He) is an odorless, colorless, tasteless, inert gas that is most often referred to as a “light gas with heavy uses.” Liquid helium is often used to cool metals to absolute zero (-460 degrees Fahrenheit). In our daily lives, we often see helium used to lift balloons. In higher purities, helium is applied as a carrier gas for chromatography. Helium is also a preferred gas for leak detection because it diffuses effortlessly through many openings as a result of its small atomic size. Helium, in specialty blends with oxygen, has enhanced deep-sea research diving by eliminating the need for nitrogen for underwater respiration. Where to buy helium Helium can be purchased through one of PurityPlus® several distribution companies. We offer a vast selection of helium in purities that range from standard commercial grades to Ultra-High and Ultra-Carrier and Research Grades. We supply helium in its gas state from 3 to 300 cubic feet, and liquid from 30 to 500 liters. To learn more about our wide selection of helium, contact your local PurityPlus® supplier using the locator button at the top of the page, or call 877-81P-PLUS (877-817-7587). PurityPlus also provides a Helium SDS available via this link or in the sidebar.