Dear Isogeochem users, 

I am a first year PhD student whose project involves the forensic
provenancing of human remains. As part of my research I am going to be
analysing the oxygen isotope ratio of phosphate in human bone samples based
on the method of O'Neil (1994) and Stephan(2000). In order to validate my
method i require a phosphate standard or bone sample with a known
d18O(VSMOW) value. Would anyone studying in this field be able to supply me
with a small amount of standard for this purpose. 

Many thanks, 

Rob Posey

University of East Anglia