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1. Are there any NIST materials available that are certified for stable
isotope composition?

2. How might I obtain the "most accepted" isotopic numbers for IAEA
N-1, N-2, and N-3?

Thanks

===========================================
Jeffrey S. Owen
Academia Sinica
Institute of Earth Sciences
P.O. Box 1-55
Nankang, Taipei
Taiwan, R.O.C.  115

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phone: +886 2 27839910 ext. 609
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