Sucrose certified reference material - UME CRM 1309 d 13 C VPDB value assignment by EA-IRMS

A certified reference material (UME CRM 1309) of sucrose for carbon isotope ratio: d 13 C VPDB (‰) value was produced according to the requirements of the ISO Guide 34:2009. The certified value with uncertainty was determined as -26.78 ± 0.81 ‰ (at k=2) by Elemental Analyzer Isotope Ratio Mass Spectrometry (EA-IRMS) method. Production and the certification processes include material processing, homogeneity study, stability studies (short-term and long-term), characterization study, statistical data evaluation and assignment of the property value and uncertainty. The d 13 C VPDB certified value of sucrose was determined by an inter-laboratory comparison study among a network of seven competent laboratories.