>Has anyone found a North American supplier of research grade H2 gas
>cylinders in the "normal" working range (0 to -428).
>Am just wondering if anyone has found a supplier in US or Canada yet.
>(Address and cost would be nice).


Len (and others that may be interested),

We've gone through a couple of cylinders of H2 gas in the last year
or so, and both tanks have had a dD value of approx. -160 per mil.
We get our H2 from Airgas, who have a web site at:
http://www.airgas.com/
which should provide all the contact information you need.  We've
been using UHP grade 5.0, cylinder size 200, which costs us $60.

Hope this helps.

Cheers,
Simon

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Simon Poulson
Dept. of Geological Sciences MS-172
1664 N. Virginia St.
University of Nevada - Reno
Reno, NV 89557-0138. USA
(775) 784-1104
Fax: (775) 784-1833
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