Table I.

True Density, Bulk Density and Tapped Density (Mean ± SD, n = 3) of Granulated Lactose Carriers GL 212–250 μm, GL 250–300 μm, GL 300–425 μm and GL 425–600 μm, GL 600–850 μm and GL 850–1,000 μm. Bulk Density and Tapped Density Increased with Decreasing Particle Size of GLs

	Pharmatose 100 M	GL 212–250 μm	GL 250–300 μm	GL 300–425 μm	GL 425–600 μm	GL 600–850 μm	GL 850–1,000 μm
True density (g/ml)	1.546	1.544	1.544	1.542	1.546	1.547	1.544
Bulk density (g/ml)	0.71 (0.02)	0.68 (0.01)	0.61 (0.01)	0.56 (0.00)	0.48 ± 0.00	0.45 ± 0.00	0.44 ± 0.01
Tapped density (g/ml)	0.94 (0.99)	0.82 (0.01)	0.71 (0.01)	0.65 (0.00)	0.58 ± 0.00	0.53 ± 0.03	0.48 ± 0.01
Carr’s Index (%)	23.82 (1.81)	16.66 (1.78)	14.12 (1.76)	14.23 (1.02)	15.97 ± 0.11	14.95 ± 3.57	9.50 ± 3.03
Angle of Repose (°)	37.2 (1.5)	31.1 (3.0)	30.2 (1.5)	32.0 (1.5)	30.0 ± 0.7	29.4 ± 0.0	27.3 ± 1.8