Research Article
Real-Time Release Testing of Herbal Extract Powder by Near-Infrared Spectroscopy considering the Uncertainty around Specification Limits
Figure 4
Accuracy profile for NIR quantitative methods. (a) Quantification of cryptotanshinone content; (b) quantification of tanshinoneIIA content. The medium blue dashed lines are the 66.7% β-content, 90% γ-confidence tolerance intervals and the red lines are the acceptance limits (±20%); the black point at each concentration level represents the relative bias for each predictive value.
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