I am an Austrian Student looking for an opportunity to process his breath
samples (of pigeons as a model in migrating bird research; 13C is
depleted in lipids and enriched in protein tissues - hence one should
tell WICH substrate is burnt; method is to be validated)
        The samples are stored in 10 ml exetainer tubes, containing about
1-5 % CO2; required accuracy about +/- .05 %o PDB;  rough estimate of %
CO2 in the same tubes (with some of the samples) and double measurements
of d13C, if possible. Preferred place Austria/Germany/Switzerland.
Interested in technical co-operation ?          Helmut