Combined optical procedures. You'll find various proprietary optical smoke measurement devices including the 'nephelometer' or even the 'aethalometer' which use numerous distinctive optical approaches, which includes multiple wavelength of light, inside only one instrument and implement an algorithm to present an excellent estimate of smoke. Smoke from oxygen-deprived fires https://broadfar.com/the-benefits-of-switching-to-nusos-heated-tobacco-solutions/