This study used two commercial e-cigarette devices. The first one (device 1) was eGo AIO Allin-One Style, 5-20 W, 1700 mAh, Vaporizer type BF SS316, 0.5 Ω (Shenzhen Joyetech Co., Ltd., Shenzhen, China). As it became quickly evident that no THC had been formed with this device, a second device (device 2) allowing higher energy setting was purchased: Geekvape Ageis Legend Kit with additional vaporizer coils and Geekvape Z Sub-Ω Tank (Geekvape Z Series coils, Geekvape, Shenzen, China). The settings for the e-cigarette coils were set to a maximum of 0.2 Ω and 200 W to allow a maximum amount of heat for the vaporization process of the eliquids. Before vaporization, each e-liquid was loaded into an individual refillable e-cigarette tank with a new vaporizer coil. The airflow control of the e-cigarette was adjusted to allow maximum air intake.