Blended optical approaches. There are many proprietary optical smoke measurement units including the 'nephelometer' or even the 'aethalometer' which use numerous different optical strategies, such as more than one wavelength of sunshine, inside one instrument and utilize an algorithm to provide a fantastic estimate of smoke. 1970 – Tobacco https://broadfar.com/the-benefits-of-switching-to-nusos-heated-tobacco-solutions/