> On Nov 4, 2017, at 2:37 PM, (via tml list) <xxxxxx@simplelists.com> wrote:
>
> So the choice between neon, argon, krypton and xenon will be a
> balance between higher molecular weight and cheaper to get in the
> volumes required.

Nitrogen is vastly more abundant than any of them, and close enough to inert for these purposes.

--
Bruce Johnson
University of Arizona
College of Pharmacy
Information Technology Group

Institutions do not have opinions, merely customs