Table 1

pH of electronic cigarette replacement cartridge liquids

E-cigarette brand/nicotine content*pH†
RegularMenthol
Green smoke (%)Absolute tobaccoMenthol ice
 0.06.74±0.087.70±0.03
 0.69.04±0.049.17±0.03
 1.29.17±0.029.46±0.03
 1.89.31±0.039.56±0.06
 2.49.37±0.049.60±0.06
NJOY (%)TraditionalMenthol
 0.66.21±0.01NA‡
 1.27.47±0.038.16±0.03
 1.87.91±0.058.20±0.06
V2 (%)RedMenthol
 0.07.46±0.027.11±0.03
 0.69.19±0.068.98±0.10
 1.29.41±0.059.19±0.07
 1.89.56±0.059.39±0.05
 2.44.78±0.099.42±0.04
Blu (mg)Classic tobaccoMagnificent menthol
 0 g5.48±0.036.11±0.02
 8 7.36±0.088.50±0.03
 12 7.62±0.028.45±0.01
 16 7.97±0.028.48±0.01

  • *Nicotine content according to the label.

  • †Means and SDs of three measurements.

  • ‡NA, not analysed. This variety was not available at the time of purchase.