Dear list members,
Doing on line pyrolysis of cellulose for 18O I realize that I need at least
two standards of different isotope ratios. Does anyone know if there is a
commercial cellulose standard I could buy in bulk with an 18O isotope ratio
over 30, preferably around 34 or greater? I bought standard Sigma
cellulose and it is 27 per mil.
Thanks in advance,
Paul D. Brooks,
147 Higard Hall MC 3110,
UC Berkeley, Ca. 94720-3110.
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