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doi: 10.1111/j.1469-1809.2010.00578.x

For those who appreciate the pure, unadulterated essence of tobacco, American Spirit Black is a meticulously crafted choice that embodies the spirit of uncompromising quality

A device advertising 6,000 puffs typically holds 12ml in total, which at 20mg is 240mg of nicotine, or somewhere around 120 to 240 cigarettes' worth of absorbed nicotine, depending on which absorption figure you use

Unlike tobacco cigarettes, electronic cigarettes aren't currently subject to regulation in the US, which means their ingredients aren't standardised

Each bit of legislation takes time - to write, to test, to pass in parliament, to implement, to defend in the courts if necessary