Table 1.

Recoveries of Nicotine, Vegetable Glycerin, and Propylene Glycol in the Gas Traps After 15 Puffs Using Different Electronic Cigarettes

E-cigarette	E-liquid vaped (mg)	Nicotine in e-liquid (µg/mg)	Nicotine delivered (mg)	Nicotine recovered (mg)	% Nicotine recovered	VG delivered (mg)	PG delivered (mg)	VG recovered (mg)	PG recovered (mg)	% VG recovered	% PG recovered
1	44.0	15.3	0.67	0.68	100	35.5	3.2	30.4	3.1	85.5	96.8
2	90.6	13.9	1.26	1.16	92.5	18.9	57.4	19.1	53.9	100	93.8
3	180.5	11.4	2.05	1.73	84.1	106.8	43.3	121.7	35.9	100	82.9
4	488.0	5.7	2.78	2.37	85.3	227.7	191.7	171.2	161.6	75.2	84.3
5	93.0	15.3	1.42	1.19	83.4	60.7	23.5	61.8	20.3	100	86.4
6	56.3	8.6	0.49	0.51	100	18.5	31.6	21.3	28.3	100	89.5
7	83.9	12.1	1.02	0.76	75.0	54.9	16.9	60.1	12.3	100	72.7
8	470.0	5.0	2.34	1.79	76.4	270.0	112.3	197.9	85.9	73.3	76.5
9	70.6	12.6	0.89	0.71	79.8	56.3	0.0	46.3	0.0	82.1	n/a
10	115.1	5.6	0.65	0.58	89.5	72.6	27.2	76.3	24.0	100	88.4
11	251.0	5.0	1.27	1.23	96.9	158.5	72.8	147.9	72.5	93.4	99.5
12	70.1	5.9	0.41	0.29	71.3	29.6	39.5	34.3	27.6	100	69.8
13	182.0	5.7	1.04	0.99	94.6	56.7	99.7	69.3	118.5	100	100
Average	168.9	9.4	1.25	1.07	86.8	89.8	55.3	81.3	49.5	93.0	86.7
SD	149.8	4.1	0.73	0.59	9.6	80.5	53.4	59.3	48.1	10.3	10.0

E-cigarette brands tested are as follows: 1, Kanger EVOD2 (tank); 2, V2 Cigs Red 18 (cig-a-like); 3, Kanger T3D (tank); 4, Vulcan (RBA); 5, Kanger T3D (tank); 6, Kanger EVOD (tank); 7, Kanger Aerotank V2 (tank); 8, K101 (RBA); 9, Blu E-cigarette (cig-a-like); 10, Kanger EVOD (tank); 11, Nimbus (RBA); 12, Vapor4Life (tank); 13, Kanger Protank II (tank). Each e-cigarette was tested once.