Table 2.

Results for determination of riboflavin concentration in multivitamin/mineral supplements.

Sample	Proposed method (μg/mL ± SD)	Reference method (μg/mL ± SD)
1	0.567 ± 0.003	0.559 ± 0.017
2	0.565 ± 0.015	0.558 ± 0.014
3	0.364 ± 0.009	0.322 ± 0.003
4	1.112 ± 0.019	1.041 ± 0.012
5	0.901 ± 0.017	0.994 ± 0.009
6	0.839 ± 0.010	0.927 ± 0.016
7	0.414 ± 0.007	0.412 ± 0.015
8	0.459 ± 0.004	0.447 ± 0.007
9	0.443 ± 0.003	0.445 ± 0.005
Overall RSD (%)	1.5	1.8

SD: standard deviation of three replicates.

RSD: relative standard deviation.