Electronic cigarettes (ECs) are popular tobacco products consisting of a battery, atomizing unit, and refill fluid. Since their introduction in 2005, the EC market has evolved, and new styles of ECs have frequently been released. Currently, there are three basic types of ECs available. The cartomizer-style combines the cartridge and atomizing unit, which can be purchased separately from the battery. In 2013, manufacturers introduced the disposable style which combined the cartomizer and the battery into a single unit, which is discarded after use. Because both the cartomizer and disposable ECs resemble conventional cigarettes, they are often referred to as “cig-a-likes” or first generation products.
Electronic cigarettes (ECs) are popular tobacco products consisting of a battery, atomizing unit, and refill fluid1,2. Since their introduction in 2005, the EC market has evolved, and new styles of ECs have frequently been released3,4,5. Currently, there are three basic types of ECs available. The cartomizer-style combines the cartridge and atomizing unit, which can be purchased separately from the battery6. In 2013, manufacturers introduced the disposable style which combined the cartomizer and the battery into a single unit, which is discarded after use7. Because both the cartomizer and disposable ECs resemble conventional cigarettes, they are often referred to as “cig-a-likes” or first generation products.
