Helium

Compressed gas oxidizing, n.o.s. Compressed gas, n.o.s. Compressed, n.o.s. Heliox (oxygen,helium) Helium Helium oxygen Helium oxygen mix Helium oxygen mix 70/30 Helium oxygen mix 80/20 Helium oxygen mixture Helium oxygen nitrogen mixture Helium-oxygen-nitrogen mixture Helium, oxygen Helium/oxygen mixture 70/30 (helium,oxygen) Helium/oxygen mixture 80/20 (helium,oxygen) Oxygen helium mixture Oxygen helium mixture 40/60 (oxygen,helium)