I'm getting really close to being able to answer the question, "If you vape an e-liquid at x mg/mL nicotine, how much of the nicotine actually gets into the vapor you inhale?"

I should take a moment to thank RenaissancePuffer for a comment he made on the nicotine determination thread that made my brain go "click!" thus leading me to the testing procedure I'm currently working on... cryogenic trapping of the vapor. It's going to save me a lot of work and provide...

I published an article based on a new french model





More photos available at

Ecigarette-info : Projet Firefox

Stopping short of doing the math here, which I'll do if folks insist (but they usually don't), this is the model I'm currently using to estimate e-liquid concentration and amount that approximates our old tobacco nicotine intake.

Here is the total mg of nicotine to vape daily based on the type of cigarettes we used to smoke and how many of them we smoked daily:

1. Ultra lights - 25 mg of nicotine from e-liquid x number of packs per day previously smoked.

2....

I enjoy hanging out on the DIY e-liquid forum.

Every so often, someone there either inquires about or links to a website dealing with pure nicotine.

22 years ago, fresh out of college with a newly minted chemistry degree in hand, had the Internet and e-smoking existed at the time, I might have been curious about getting my hands on pure nicotine at home. I was young, smart, and indestructible.

22 years later, with over 45,000 hours spent working with toxic...