Materials with known ²H, ¹³C, ¹⁵N and ¹⁸O isotopic composition

IAEA-600, Caffeine

Unit Size: 0.5 g
Price per Unit: 130 €
Date of Release: 2004

IAEA-600 was prepared by W. Brand and R. Werner, Max-Planck-Institute for Biogeochemistry, Jena, Germany from commercially produced pure caffeine. Its recommended δ¹³C value was determined in an international calibration exercise [1]. For this reference material the δ¹⁵N value war determined in one laboratory only and therefore is only an information value.

Analyte	Value	Unit	SD	R/I/C
δ13C	-27.771	‰VPDB	0.043	C
δ15N	+1.0	‰air N2	0.2	I

(R/I/C) Classification assigned to the property value for analyte (Recommended/Information/Certified)

References:

1. Coplen T.B., Brand W.A., Gehre M., Gröning M., Meijer H.A.J., Toman B., Verkouteren R.M. (2006): New Guidelines for δ¹³C Measurements. Anal. Chem. 78, 2439-2441.