Filter/dilution tunnel. A smoke sample is drawn via a tube wherever it truly is diluted with air, the ensuing smoke/air mixture is then pulled through a filter and weighed. Here is the internationally regarded way of measuring smoke from combustion.[sixty six] 1600 – Tobacco utilised as income-crop – a https://broadfar.com/non-combusted-cigarettes-a-safer-alternative-or-just-a-myth/