Each empty tank cartridge holds 1ml of e-liquid and is compatible with the Tornado-T cone shaped atomizer. Simply fill the tank cartridge with e-liquid, push in to the atomizer and it's ready to use.
Please be aware that although the cartridge can be refilled multiple times, the tank cap is a single use item. We only guarantee each tank cap for a single use. If the e-liquid begins to leak from the atomizer, it is most likely the tank cap hole has become enlarged and needs replacing.