Study product
Each Vuse Solo ENDS consist of power unit and a cartridge. Each cartridge is a sealed unit containing 0.5 mL of e-liquid comprising 4.8% nicotine by weight (~ 57 mg/mL), and containing nicotine salts, propylene glycol, glycerin, flavorings, and water. The products were powered by a rechargeable power unit and included a heating element, microchips, and a sensor. Aerosol generation is activated by detection of a pressure differential within the ENDS product during puffing.