Study on Preparation Technology and Physical Fingerprint of Chuilian Jianpi Granules Based on QbD

Table 7

Standardized conversion method of secondary physical indexes.

Level indicators	The secondary indicators	Numerical range (x)	Conversion formula
Bulk property	Tap density (g/mL^−1)	0～1	10x
	Bulk density (g/mL^−1)	0～1	10x
Stability	Hygroscopicity (%)	20%～0	10−(x/2)
	Water content (%)	10%～0	10−x
Mobility	Hausner ratio	0～3	(30−10x)/2
	Angle of repose (°)	50～0	10−(x/5)
Uniformity	Relative homogeneity index	0～0.02	500x