photoelectric cell type whiteness meter
4.ZBD Model whiteness Measurement Meter is mainly applicable to measurement of the whiteness of colourless even surface objects and powder,such as paper,pulp ,ceramics,enamel ,plastics, enamel,plastics,various fiber and fabric, wheat flour, talcum powed,starch,coating and chemicals etc.It canalso measure comparatively accurately the fluorescent whiteness of the objects with fluorescentbrighterner.
10.photoelectric phenomena
