Table 6.

Aerodynamic Size distribution of different formulations of the DPIs using Andersoncascade impactor (n = 3)

Fine Particle Fraction (FPF) (%) Mean ± SD	Drug deposition (%)								Lactose (%)	No.
	Stage 8 (0.52 µm) Mean ± SD	Stage 7 (0.93 µm) Mean ± SD	Stage 6 (1.55 µm) Mean ± SD	Stage 5 (3.5 µm) Mean ± SD	Stage 4 (5.0 µm) Mean ± SD	Stage 3 (9.8 µm) Mean ± SD	Stage 2 (14.8 µm) Mean ± SD	Stage 1 (21.3 µm) Mean ± SD
35.71 ± 1.81	32.54 ± 3.62	26.50 ± 3.42	6.48 ± 1.31	2.73 ± 0.62	2.44 ± 0.86	0.67 ± 0.12	ND1	ND1	1	1
53.96 ± 3.67	25.87 ± 4.72	24.61 ± 2.65	17.93 ± 3.42	11.42 ± 3.15	9.27 ± 2.38	4.68 ± 1.47	1.31 ± 0.18	ND1	5	2
72.57 ± 4.33	10.31 ± 3.57	23.52 ± 4.11	27.10 ± 3.95	21.95 ± 4.83	4.39 ± 2.52	5.61 ± 1.83	2.24 ± 0.68	2.93 ± 0.73	10	3
54.99 ± 3.04	2.63 ± 0.96	10.88 ± 2.75	18.43 ± 3.52	25.68 ± 2.41	11.46 ± 3.78	17.13 ± 3.27	7.49 ± 1.59	8.74 ± 2.86	15	4
22.03 ± 2.53	ND1	4.94 ± 1.21	7.37 ± 3.64	9.72 ± 2.31	15.53 ± 3.64	18.90 ± 2.75	22.83 ± 3.56	20.37 ± 3.63	20	5

¹Not Detected.