The corrected decadic attenuance at 280 nm (Dcorr) for each sample was calculated by subtracting the mean D280 blank measurement from each sample D280 measurement. Intra-vial measurement repeatability was evaluated by performing triplicate analyses from the same vial of lot 14HB-D-001 and resulted in a Coefficient of Variation (CV) of 0.065% (based on the standard deviation of the measured decadic attenuance, SDD). The inter-vial homogeneity (n = 10 vials per lot) resulted in a CV of 0.090%, 0.176%, and 0.137% (based on SDD for lots D-001, D-002, and D-003 respectively); only slightly larger than the intra-vial precision. There was no apparent trend in the data with respect to vial/rack position within a lot or when plotted against the sequence in which the samples were prepared. Similar results were found for each of the three lots, indicating the vial filling process was homogeneous across all racks from an individual lot.