It is mainly applied to the measurement of the whiteness of objects or powders with non-colored surface smoothness, and can accurately obtain the whiteness value consistent with the visual acuity. 

The opacity of the paper can be accurately measured. This item can be widely used in textile printing and dyeing, paint coatings, chemical building materials, paperboard, plastic products, white cement, ceramics, enamel, talcum powder, starch, flour, salt, detergents, cosmetics and other substances whiteness measurement.