So everytime i buy e-juice is see nicotine displayed in mg. 18mg, 11mg, 0mg etc. but who says how thats measured?
im not asking how you measure a mg (milligram) i know that, how much e-liquid has 18mg in it? is it a fluid ounce, a liter, 20 ml, a gallon, two drops?? and for that matter is this...