Question: what does 3 nicotine mean?
Answer: This refers to the strength of the liquid. 3mg actually means 3mg of nicotine per ml of liquid. In a 10ml bottle, there are 10mls of liquid, each with 3mg of nicotine in. So in a 10ml bottle there are 3mg x 10ml = 30mg of nicotine in total. (mg x ml = total nicotine in the bottle)