The Halo site claims that their cartomizers hold 1mL of liquid but they also say add 20 drops to a blank (and my experience is that 20 drops is about the limit to avoid overfilling). Yet if I use the dropper that comes with their 30mL bottles and fill it to the 1mL line, 20 drops comes out to around 0.5mL (holding the dropper vertically). I've also read elsewhere that 20 drops is about 1mL and that seems in line with rules of thumb about dripping any liquid from an eyedropper. What gives?
Is the useful cartomizer capacity actually only 0.5ml or is the dropper not properly calibrated.
