Table 4.

Micromeritic properties of microparticles

	1M	5M	10M	1L	5L	10L	1MD	5MD	10MD	A	Pure risperidone
balk density (g/mL)	0. 071	0. 09	0. 06	0. 022	0. 083	0. 05	0. 06	0. 05	0. 05	0. 033	0. 127
tap density (g/mL)	0. 1	0. 15	0. 11	0. 025	0. 1	0. 083	0. 085	0. 1	0. 075	0. 044	0. 212
Carr’s Index	29	40	45. 4	12	17	39. 75	29. 4	50	33. 3	25	40
Hausner’s Ratio	1. 4	1. 66	1. 83	1. 13	1. 2	1. 6	1. 4	2	1. 5	1. 3	1. 66
Flowability	poor	very very poor	very very poor	good	fair	very very poor	poor	very very poor	very poor	passable	very very poor