Filter/dilution tunnel. A smoke sample is drawn by way of a tube where by it is actually diluted with air, the ensuing smoke/air mixture is then pulled via a filter and weighed. This is actually the internationally acknowledged technique of measuring smoke from combustion.[66] DNA. Arsenic, nickel and radioactive https://broadfar.com/oraco-pioneering-a-smokeless-future-with-innovative-nicotine-delivery/