Table V.
Aerosol performance of micronized albuterol sulfate powder from modified low air volume dry powder inhaler at 10 mg fill mass. Values are mean (standard deviation), n≥3.
| Delivery tube length (mm) | 1st actuation |
Cumulative mass emitted after 3 actuations (% nominal) |
||||
|---|---|---|---|---|---|---|
| Mass emitted (mg) | Mass emitted (% nominal) |
Dv50 (µm) |
Particle fraction (%) |
|||
| <1 µm | <5 µm | |||||
| 90 | 7.22 (0.36) | 72.8 (3.1) | 5.8 (1.8) | 13.2 (2.0) | 48.6 (7.4) | 94.4 (0.5) |
| 55 | 7.35 (0.35) | 72.5 (3.0) | 5.3 (1.8) | 9.4 (3.0) | 51.8 (9.3) | 90.3 (2.2) |