Outcome of salbutamol dose delivered via metered-dose inhaler (MDI) and different MDI–spacer combinations in 2 L volume of inhalation (assuming old child inhalation volume)
| MDI or MDI/accessory device | Nature | Emitted dose % | Dose deposited in spacer % |
| MDI only | 87.2 ± 6.9 | NA | |
| Aerochamber mask | Antistatic | 69.8 ± 5.8 | 18.7 ± 4.1 |
| Able spacer mouthpiece | Antistatic | 66.2 ± 6 | 22.3 ± 4.3 |
| Able spacer mask | Antistatic | 64.3 ± 5.1 | 24.1 ± 4.9 |
| Tips-haler mouthpiece | Antistatic | 53.9 ± 6.5 | 38.2 ± 4.5 |
| Tips-haler mask | Antistatic | 51.5 ± 6.1 | 34.5 ± 6 |
| Dolphin chamber mouthpiece | Non-antistatic | 32.4 ± 6.7 | 53.7 ± 5.5 |
| Dolphin chamber mask | Non-antistatic | 32.2 ± 6.4 | 57.6 ± 3.5 |
| Dolphin chamber wash | Non-antistatic | 47.6 ± 5.9 | NA |
| Drink bottle mouthpiece | Non-antistatic | 34.3 ± 7.3 | 54 ± 9.3 |
| Drink bottle wash | Non-antistatic | 49.9 ± 6.2 | NA |
Data are presented as mean±sd. NA: not applicable.