There are two main types of e-cigarette - open and closed system, also known as open and closed tank. In an open system, the liquid that is vapourised can be refilled manually by the user.

But vaping's helped millions of people to ditch traditional cigarettes ... a temporary switch to a tank-style vape, giving you access to different e-liquids, might be better.

OLYMPIA, Wash. — Washington State Superintendent of Public Instruction Chris Reykdal announced his support of state legislation that would end the sale of all flavored tobacco products in ...