Table 2. Validation results of accuracy, precision, HorRat value and relative expanded uncertainty of Bixin

Samples	Added standard (mg/L)	Intra-day1)			Inter-day2)			Relative expanded uncertainty (%)
		Accuracy (%)3)	Precision (%RSD)	HorRat (r)4)	Accuracy (%)	Precision (%RSD)	HorRat (r)5)
Cheese	2	94.60±0.52	0.55	0.08	96.18±1.45	1.51	0.21	9.7
	5	88.81±0.53	0.59	0.09	90.95±1.98	2.17	0.35	4.3
	10	92.69±0.19	0.21	0.04	92.94±0.68	0.73	0.13	2.6
Processed milk	2	90.42±0.87	0.97	0.14	90.48±1.03	1.13	0.16	10.5
	5	95.08±0.69	0.72	0.12	94.93±0.54	0.57	0.09	4.3
	10	96.62±0.55	0.57	0.10	96.99±0.51	0.52	0.09	2.7
Ham	2	91.71±1.40	1.53	0.21	94.46±2.44	2.59	0.36	10.1
	5	87.99±1.29	1.47	0.24	89.15±1.51	1.69	0.27	4.5
	10	88.32±1.06	1.20	0.21	89.30±0.95	1.06	0.19	2.9

Analysis was conducted six time/day.
Analysis was conducted three times on three days.
Average±SD.
HorRat ratio for intra-day repeatability.
HorRat ratio for inter-day repeatability.
RSD, relative SD.