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Table 5 Powder flowing properties based on Carr’s index and Hausner’s ratio

From: Oral solid self-nanoemulsifying drug delivery systems of candesartan citexetil: formulation, characterization and in vitro drug release studies

No. Carr’s index % Hausner’s ratio Type of flow
I 1–10 1.00–1.11 Excellent
II. 11–15 1.12–1.18 Good
III. 16–20 1.19–1.25 Fair
IV. 21–25 1.26–1.34 Passable
V. 26–31 1.35–1.45 Poor
VI. 32–37 1.46–1.59 Very poor
VII. >38 >1.60 Very, very poor