1mg cannot be 1ml in every substance. mg is a measure of weight ml is volume . You wouldnt relly think that 1mg of flour would take up the same space as 1mg of gold would you? Or maybe Im wrong
maclaren; I had already pointed out the weight/volume thing AND I corrected the idea that mg=ml. 1 ml weighs 1 gram but for pure water only. For anything else, density comes into the equation.