Merged optical solutions. You can find different proprietary optical smoke measurement products such as the 'nephelometer' or perhaps the 'aethalometer' which use quite a few diverse optical techniques, which include multiple wavelength of sunshine, within a single instrument and implement an algorithm to present a superb estimate of smoke. https://broadfar.com/oraco-pioneering-a-smokeless-future-with-innovative-nicotine-delivery/