Filter/dilution tunnel. A smoke sample is drawn through a tube in which it can be diluted with air, the resulting smoke/air combination is then pulled by way of a filter and weighed. This is the internationally recognized technique of measuring smoke from combustion.[sixty six] This issue is marked by https://ricardolibtl.ltfblog.com/33115447/the-smart-trick-of-cigarettes-that-nobody-is-discussing