Semicontinuous Blending of Pharmaceutical Ingredients and the Impact of Process Parameters on the Blending Performance of an Integrated Feeder Blender Operating Semicontinuously

Table 2

Flowability categorization based on HR and CI values [36].

Nature of flow	Carr index	Hausner’s ratio
Excellent flow	<10	1.00–1.11
Good flow	11–15	1.12–1.18
Fair flow	16–20	1.19–1.25
Passable	21–25	1.26–1.34
Poor	26–31	1.35–1.45
Very poor	32–37	1.46–1.59
No flow	>38	>1.60