How sensitive is the instrument to variations in particulate color and refractive index?
The Microdust pro uses a very narrow angle of scatter to deduce the particulate concentration (in the order of 12-20°). This reduces the amount of light scattered in the reflected component and instead concentrates on the diffracted and refracted components (see figure 7 below). The most important component is the diffracted light, which is the light “bending” around the object. Diffraction generally does not depend on particulate color or refractive index.
