Table 2.

Number and calculated mass-based aerosol characteristics from fast mobility particle sizer (FMPS) and scanning mobility particle sizer (SMPS) measurements (n = 6 trials/e-liquid).

	FMPS			SMPS
E-liquid	CMD (μm)	GSD	MMAD (μm)	CMD (μm)	GSD	MMAD (μm)
30:70 PG:VG	0.075	1.004	0.082	0.132	2.6	2.23
30:70 PG:VG w/flavorings	0.060	1.005	0.066	0.141	2.4	1.54
30:70 PG:VG w/nicotine	0.062	1.005	0.068	0.140	2.4	1.52
70:30 PG:VG	0.064	1.004	0.067	0.076	2.6	1.24
70:30 PG:VG w/flavorings	0.073	1.004	0.077	0.078	2.5	1.02
70:30 PG:VG w/nicotine	0.072	1.004	0.076	0.071	2.5	0.93

CMD, count median diameter; GSD, geometric standard deviation; MMAD, mass median aerodynamic diameter; PG, propylene glycol; VG, vegetable glycerin.