Carsten,

You could try Campro Scientific. I cannot remember if they have tritium
labelled CH4 off hand and the catalogue seems to have disappeared from the
lab. The website is not very informative (it does mention radioactive
isotopes) but you could try sending them an e-mail.

They are based in Berlin.

Website: http://www.campro-scientific.de/main.htm

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Good luck

Joanne






At 03:01 PM 4/5/04 +0200, you wrote:
>>Dear geochemists,
>
>
>I know it's not a stable isotope but does anybody know a supplier for
>tritium labelled methane in Germany/Switzerland/Europe. Any ideas would be
>highly appreciated.
>
>Carsten
>
>
>__________________________________________________________________
>
>Carsten J. Schubert
>EAWAG
>Limnological Research Center
>CH-6047 Kastanienbaum, Switzerland
>Phone: +41-41-349 21 95 Fax: +41-41-349 21 68
>Phone Secretary: +41-41-349-21 11
>e-mail: [log in to unmask]
>
>http://www.internal.eawag.ch/~schubeca/
>
>http://www.eawag.ch/
>
>
Dr Joanne Potter
Institut fuer Mineralogie und Mineralische Rohstoffe
Technische Universitaet Clausthal
Adolph-Roemer Strasse, 2a
38678 Clausthal - Zellerfeld
DEUTSCHLAND

Tel.  + 49 (0)5323 72 3670
Fax:  +49 (0)5323 72 3737