Hi everybody, We are planning to use a EA-CF-IRMS to analyze 15N/14N in cellulose and in water. Doing a search at the library has let me with almost nothing. Can I get references on 15N/14N with EA-CF from you guys? Merci beaucoup! Martine M. Savard Delta-Lab Geological Survey of Canada GSC-Q [log in to unmask]