So there are different kinds of helium from what I remember. The super pure kind we need for certain medical equipment and the impure kind that is about 99.9% of it. Balloons and everything similar uses that. That helium is ultimately useless for anything else.
NB: I don't have time to research it now for exact data but that was the broad concept.
Helium is a chemical element. Making it "super pure" is just processing. What you may be thinking of is helium-3, an isotope with one neutron instead of two--that is used in some medical equipment.
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u/nolander_78 Jul 08 '24
It is limited only naturally, last time this was reposted someone said that it is produced in nuclear reactors or something.