Table 1.
Description of E-liquids used in study.
| E-Liquid | Date | Batch | Expiration Date | Ratio of PG/VG | Stated | Additional |
|---|---|---|---|---|---|---|
| Brand | Purchased or Acquired | Identification | Level of Nicotine | Ingredients | ||
| E-liquid 1 | ||||||
| Bottle 1 | Jul 18, 2016 | Not Available | Not Available | 80/20 | 24 mg/mL | Tobacco Flavoring |
| Bottle 2 | Jul 25, 2016 | |||||
| Bottle 3 | Aug 1, 2016 | |||||
| E-liquid 2 | ||||||
| Bottle 1 | Jul 18, 2016 | 16TB30E5801 | Apr 2018 | 70/30 | 24 mg/mL | Tobacco Flavoring |
| Bottle 2 | Jul 25, 2016 | 16TB30E9401 | Jul 2018 | |||
| Bottle 3 | Aug 1, 2016 | 16TB30E9401 | Jul 2018 | |||
| E-liquid 3 | ||||||
| Bottle 1 | Jul 18, 2016 | 6036CBY24 | Not Available | 50/50 | 24 mg/mL | Tobacco Flavoring |
| Bottle 2 | Jul 25, 2016 | 6036CBY24 | ||||
| Bottle 3 | Aug 1, 2016 | 6036CBY24 | ||||
| E-liquid 4 | ||||||
| Bottle 1 Bottle 2 Bottle 3 | Jul 18, 2016 Jul 25, 2016 Aug 1, 2016 | Not Available | Not Available | 60/30 | 24 mg/mL | Tobacco flavoring |
| E-liquid 5 | ||||||
| Bottle 1 | Jul 18, 2016 | VSEJ | Nov 2017 | 70/30 | 18 mg/mL | Tobacco Flavoring |
| Bottle 2 | Jul 25, 2016 | VSEJ | Nov 2017 | |||
| Bottle 3 | Aug 1, 2016 | VSEJ | Nov 2017 | |||
| Reference | ||||||
| Bottle 1 | Aug 11, 2016 | Batch 1 | Not Available | 50/50 | 20 mg/mL | No Flavorings |
| Bottle 2 | Aug 11, 2016 | Batch 2 | ||||
| Bottle 3 | Aug 11, 2016 | Batch 3 |
PG = propylene glycol; VG = vegetable glycerin (i.e., glycerol).