Sorry the title should read 12mg solution, not 12mg nicotine. I need an expert's opinion because I am dealing with nicotine and mistakes are dangerous. Someone in another thread is insisting 1 ml of 12mg liquid contains 12mg of nicotine. I say the correct figure is 0.012 mg. Who is right? Thanks in advance, and please, if you are not an expert, or you are unsure, let the veterans speak. Thanks again.