Table 3.
PSD, regional respiratory deposition, the percentage of exhaled electronic cigarette, or vaping, products (EVPs) aerosols, and statistical comparisons of JUUL® pod types (n = 5 puffs per pod type) and the reference e-liquid at the same puff profile (65-ml puff volume at 7.5 W).
| JUUL® pod type | Nicotine % | Density of e-liquid (g/ml) | Average MMAD (μm) ± SD | GSD | Head (%) | TB (%) | Pulmonary (%) | Total respiratory (%) | Exhaled aerosol (%) |
|---|---|---|---|---|---|---|---|---|---|
| Virginia Tobacco | 3 | 1.10 | 1.49 ± 0.30A, B | 2.50 | 49 | 18 | 33 | 45 | 55 |
| Virginia Tobacco | 5 | 1.01 | 1.20 ± 0.45A, B | 2.27 | 43 | 21 | 37 | 36 | 64 |
| Menthol | 3 | 1.42 | 1.11 ± 0.11A, B | 2.45 | 43 | 20 | 37 | 39 | 61 |
| Menthol | 5 | 1.27 | 0.92 ± 0.19B | 1.69 | 35 | 23 | 42 | 28 | 72 |
| Classic Tobacco | 3 | 1.17 | 1.47 ± 0.34A, B | 2.54 | 49 | 18 | 33 | 44 | 56 |
| Classic Tobacco | 5 | 1.26 | 1.40 ± 0.14A, B | 2.57 | 48 | 18 | 34 | 45 | 55 |
| Mint | 3 | 1.07 | 1.21 ± 0.20A, B | 2.46 | 45 | 19 | 36 | 40 | 60 |
| Mint | 5 | 1.06 | 1.41 ± 0.25A, B | 2.64 | 49 | 18 | 33 | 45 | 55 |
| Crème Brulee | 5 | 1.26 | 1.31 ± 0.29A, B | 2.71 | 48 | 18 | 33 | 42 | 58 |
| Fruit Medley | 5 | 1.02 | 1.67 ± 0.53A | 2.75 | 52 | 18 | 30 | 47 | 53 |
| Mango | 5 | 1.03 | 1.55 ± 0.11A | 2.65 | 50 | 18 | 32 | 48 | 52 |
| Classic Menthol | 5 | 1.11 | 1.59 ± 0.20A | 2.57 | 50 | 18 | 32 | 47 | 53 |
| Reference | 0 | 1.13 | 1.13 ± 0.06A, B | 1.63 | 39 | 20 | 41 | 32 | 68 |
MMAD, mass median aerodynamic diameter; SD, standard deviation; GSD, geometric SD; TB, trachea-bronchial region.
JUUL® pod types and the reference e-liquid not connected by the same letter (A or B) had significantly different MMADs at p < 0.05. Resistance (Ω) for JUUL® pod types: Average ± SD (Ω: 1.81 ± 0.03) with relative SD 1.87%.