ml

ml is short for Millilitre and is used to measure the amount of liquid in a tank or bottle. e-Liquid bottles usually come in 10ml and 30ml sizes but much larger quantities can be purchased. On average a tank will hold around 3.5ml of e-Liquid but again the capacity will vary depending on the size of the tank you are using. The strength of nicotine in e-Liquid is measured per ml.