>Dear Isogeochemists,
>    I am setting up to analyze for sulfate and am buying SO2 gas to use as a
>reference standard.  I've been instructed to purchase 99.996% grade but so
>far have only been able to find 99.98% through my suppliers' contacts.  Any
>advice?
>Thanks in advance,
>DL Roose


Deborah,

We've been using 99.98% SO2 with our Isoprime-EA setup for about a
year now and we've been happy with the results.

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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