Dear Isogeochems,

     I am looking for a laboratory that performs stable isotope analysis
     in molecular nitrogen. The samples are natural gas probably with
     some C2+. A GC-C-IRMS or similar arrangement is necessary in order
     to insure that the nitrogen isotope ratio is being determined only
     in the molecular nitrogen.

     Please let me know also associated costs

     Best Regards,

     Adriano Parisi
     INTEVEP SA
     Caracas-Venezuela
     e-mail:[log in to unmask]
     FAX-58 2 9086800