Real-Time Release Testing of Herbal Extract Powder by Near-Infrared Spectroscopy considering the Uncertainty around Specification Limits

Table 4

The validation results of NIR determination of tanshinoneII_A.

Theoretical concentration (%)	Mean calculated content (%)	Trueness		Precision
		Relative bias (%)	Recovery (%)	Repeatability (%)	Intermediate precision (%)
0.10	−0.20	−294.70	−194.70	390.80	390.80
0.15	−0.13	−184.44	−84.44	250.76	250.76
0.36	0.24	−32.96	67.04	87.85	93.70
0.54	0.85	58.02	158.02	47.40	47.40
2.04	1.60	−21.67	78.33	16.04	17.95
6.03	5.95	−1.34	98.66	6.37	6.37
18.76	18.34	−2.26	97.74	3.31	3.36
27.64	26.45	−4.30	95.70	1.63	1.91