It also depends on how long and how frequently you've smoked. If it was one hit, one time only and ever, should be out of your system for a urine test within a couple weeks, if not days. If you're asking how long you stay high off one hit...depends on the weed and how often you smoke. But, usually not very long.
Manufacturers often design e-cigarettes to look like regular cigarettes, but they contain no tobacco and don't require a match -- or any flame at all. An e-cigarette is a battery-powered device that converts liquid nicotine into a mist, or vapor, that the user inhales. There's no fire, no ash and no smoky smell. E-cigarettes do not contain all of the harmful chemicals associated with smoking tobacco cigarettes, such as carbon monoxide and tar.
Types of electronic cigarettes tutorial. This video compares the different types of ecigs and vaporizers. It covers cartomizers, atomiziers, eGo ecigs (vape pens), mechanical mods (RBA), e-juice/e-liquid, and nicotine strengths. The cigarette imitations 'cigalikes' mimic traditional tobacco cigarettes. They consist of a battery and cartomizer. Cartomizers consist of a cartridge to holds the nicotine liquid and an atomizer that vaporizes the liquid. The eGo style ecigs (vape pens) consist of a battery and clearomizer. Clearomizers are a clear e-juice tank with an atomizer. E-juice or e-liquid is a nicotine flavored liquid. Mods are for the hobbyist. There are variable voltage and mechanical type mods.