Dear Isotope Users,

In Dr. Haraldur Karlsson's responce to MS purchase he refered to a "RING
TEST" conducted last year involving analysis of hydrogen by old and new
mass spectrometers.   I would greatly appreciate any information concerning
the results from this test.

Thanks in advance,

Bruce






Bruce Barnett
U.S.D.A. Human Nutrition Research Center
Tufts University
711 Washington St.
Boston, MA  02111