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Kevin,

When I jokingly referred to "balloon grade" helium, I had no idea that
suppliers would actually "cut" helium with a cheaper gas.
I was really referring to 99.99% pure helium. My supplier does NOT have
a separate balloon grade.

-John


> Now I don't have first hand experience on this (my supplier doesn't do
> this) but I've heard that some suppliers actually use a really low grade
> helium and mix it with another cheaper gas (nitrogen) for a specific
> "balloon" application.   This makes it cheaper than the pure industrial
> stuff, but still floats balloons.  

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