What is the difference between a closed and an open system e‑cigarette? 

E-cigarettes are divided into closed and open systems. A closed e-cigarette uses ready-made e-liquid capsules that are inserted into the e-cigarette, which is then ready to use. In the open system the e-liquid is bought in separate bottles. Users have to then mix liquids and fill the e-cigarettes by themselves.

E-cigarettes are also known as e-savuke, höyrystin and höyryke in Finnish. Vaping is translated in höyryttely, vapettaminen, vapottaminen and vapottelu.

E-cigarettes use e-liquid that usually consists of nicotine, flavorings, propylene glycol and glycerin. In Finland only tobacco flavored or flavorless e-liquids are allowed. There are also liquids without nicotine available for e-cigarettes.

E-cigarettes are smoke-free products. They heat the e-liquid that turns into vapor. There is no combustion or smoke in e-cigarettes, therefore, they do not produce tar or carbon monoxide. In cigarettes, there is combustion while tobacco is burnt and the temperature reaches more than 800°C. In the combustion more than 6000 different chemical substances are formed, of which around 100 are known to be harmful to people.

Parts of an e-cigarette include a pod for e-liquid, atomizer, battery, led-light and a button. The e-cigarette is activated when a person draws a puff.

Dry puff or dry hit is the result of a low level of e-liquid and the vapor weakening. It has a burnt taste, and it also increases the number of harmful constituents. E-cigarettes with advanced technology will detect low liquid level and prevent overheating.