Filter/dilution tunnel. A smoke sample is drawn by way of a tube the place it is diluted with air, the resulting smoke/air mixture is then pulled through a filter and weighed. This is actually the internationally identified technique of measuring smoke from combustion.[sixty six] )[eighteen] Magnetic remanence, recorded during https://broadfar.com/non-combusted-cigarettes-a-safer-alternative-or-just-a-myth/