dear deborah,
we have the same experience with 99.98% SO2 gas as ref.gas for the IRMS
measurements like simon. its working quite good since 2years.
cheers heike.
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Heike Siegmund
Department of Geology and Geochemistry
Stockholm University
S-10691 Stockholm
Sweden
Tel.:++46-8-6747726
Fax.:++46-8-6747897
e-mail:[log in to unmask]
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