Dear Darren:

I'd like to analyze D-15N on ammonium sulfate and KNO3 and D-13C on sugar
for interlab comparison. Please send the samples

Dr. Dachun Zhang
Stable Isotope Lab Manager
Global Geochemistry Corp.
6919 Eton Av.
Canoga Park, CA 91303
USA
-----Original Message-----
From: Darren Sleep <[log in to unmask]>
To: [log in to unmask] <[log in to unmask]>
Date: Monday, February 02, 1998 3:00 AM
Subject: Inter-Lab Comparisons


>Hi Folks,
>                 I need to arrange some verification of figures for our
'working'
>standards. If anyone would be willing to analyse our Ammonium sulphate &
>KNO3 for delta 15-N, Sucrose for 13-C and a finely ground vegetation
>sample for both isotopes I'd be very grateful and would, of course,
>reciprocate with similar analyses.
>                 Please contact me if you could help.
>
>
Darren.
>