Dear Jane,
why not try Messer Griesheim GmbH. They have a range of gases including
hydrogen gas with a dD value close to 0 permil:
Messer Griesheim GmbH, Industriegase
Fuetingsweg 34, 47805 Krefeld
Germany
Contact person: Mrs. Renate Schmidt
Tel (0203) 6002-388
Fax (0203) 6002-460
Greetings,
Torsten.
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Torsten W. Vennemann
Institute for Geochemistry
University of Tuebingen
Wilhelmstr. 56
D-72074 Tuebingen
Germany
Tel: (0)7071 29 74992
Fax: (0)7071 29 5713
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