Research Article

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

Figure 6

(a) The unreliability graph of tanshinoneIIA. (b) The unreliable region estimated around the specification limit of tanshinoneIIA in tanshinone extract. Blue dashed lines are the 66.7% β-content, 90% γ-confidence tolerance intervals; the diagonal continuous line is the identity line y = x; the red vertical straight line and the black horizontal dashed line are the API specification limits; the shaded region corresponds to the unreliable region.
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