Fig. 1From: Expanded uncertainty modeling of the uranium isotope dilution standardsRelative deviations calculated for the elemental uranium content in CRM 149 sample (treated as unknown) using the CRM 112A original and diluted spikes. Relative deviations are given in percentage in the order of R(235U/238U)mixture ratios increase. (RD% = 100 × (Cusample/Cusimulated − 1))Back to article page