“…Predicted lung delivery efficiency, given by the product of emitted dose and respirable fraction (i.e., percent of aerosol droplets ~5.7 pm), was 53.4% (relative standard deviation, 3.4%). The percentage of loaded dose emitted as an aerosol was 61.1% (relative standard deviation, 12.8%; 12 = 10) of which 87.4% (relative standard deviation, 3.4%) contained aerosol droplets in the respirable range.…”