SBDY-1 digital whiteness meter is mainly applied to non-white color surface roughness measurement object or powders, can be quantitatively reflect the fluorescent whitening whiteness after. For the opacity of the paper can be accurately measured. Whiteness The instrument can be widely used in textile, paint, chemicals, building materials, paper, cardboard, plastic products, white cement, ceramics, porcelain pond, clay, talc, starch, flour, salt, detergents, cosmetics and other objects measurement.