Dear All,

      We are trying to analyze both hydrogen and oxygen of solid samples on
a Finnigan Delta Plus with a TC/EA, and wanted to know if anyone knew of
any isotopic standards that we could use for calibration of hydrogen
isotopes. We already have NBS-22, but need at least one more standard to
get a calibration curve.

Any suggestions or references would be greatly appreciated.

Bernie Genna

NCSU