Dear All, Just wondering who out there is currently performing contract sulfur isotope work with reasonably quick turn around time (< 2 months). I have ~50 samples which are freeze-dried, organic rich lake sediment from South America and would be looking for %Sulfur and S isotopes (and perhaps concentrations and isotopes for C and N as well). Cheers, Colin A. Cooke Department of Geology University of Pittsburgh 3-16 SRCC Bldg. 412.624.8731 (p) [log in to unmask]