Table 3: The validation results for NIR determination of cryptotanshinone.

Theoretical concentration (%)Mean calculated content (%)TruenessPrecision
Relative bias (%)Recovery (%)Repeatability (%)Intermediate precision (%)

0.200.40100.00200.0073.5892.85
0.310.4646.88146.8846.3452.73
0.500.6938.93138.9329.1635.68
1.180.86−26.8973.1126.9826.98
2.052.060.33100.337.677.97
2.262.489.72109.729.249.97
5.294.92−6.9993.013.484.28
9.689.51−1.7298.282.993.06