Hi,
for the Gasbench we use a 4.5 grade CO2 from Linde (Germany) which
has a d13C of -3.6%o and a d18O of -4.9%o VPDB which is not far away
from
marine carbonates. The bottle is a few years old (from 2002 or so),
so I am not sure about the present values.

Regards,
Robert
 
 

--
Dr. Robert van Geldern
Section 3: Geochronology and Isotope Hydrology
Leibniz Institute for Applied Geosciences (GGA-Institute)

GEOZENTRUM HANNOVER
Stilleweg 2
30655 Hannover, Germany

Phone: +49-(0)511-643-2313
Fax: +49-(0)511-643-3665
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