Table 1.

Fundamental powder characteristics

Materials	Bulk density (g/cm3)	Tap density (g/cm3)	Flow rate (g/sec)
Powder (# 85)	0.45 ± 0.065	0.55 ± 0.036	No flow
Direct compression	0.435 ± 0.15	0.476 ± 0.049	2.36 ± 0.943
Granule	0.382 ± 0.017	0.439 ± 0.25	4.56 ± 0.572
f-value (F critical )	5820.66* 5.1432	2328.77* 5.1432	4736.71* 7.7086

All values are expressed as mean ± SD, n = 10, * ANOVA at p < 0.05 level showed a significant difference