Table 3. Aerodynamic characteristics of the emitted dose of salbutamol from pMDI with an attached Aerochamber Plus at flow rate of 28.3L/m .

Run No.	Amount left in spacer (% of the label dose)	Delivered amount (% of the label dose)	Fine particle dose (µg)	Fine particle fraction (% of the label dose)	MMAD (µm)	GSD
Run 1	34%	69%	57	82	2.6	1.7
Run 2	27%	76%	67	88	2.8	1.5
Run 3	30%	80%	68	85	2.9	1.5
Mean	30%	75%	64	85	2.77	1.57