This product is used to determine the whiteness of objects. It is widely used in papermaking, textile, printing and dyeing, plastics, ceramics, enamel, grain, building materials, paint, chemical industry, salt and other production and commodity inspection departments that need to measure the whiteness of objects. The instrument can also measure ISO brightness (that is, R457 whiteness), and can measure the fluorescence whiteness produced by the emission of fluorescent substances for fluorescent whitening samples, and can measure the transparency, opacity, light scattering coefficient and absorption coefficient of paper and other thin sheet materials. The instrument adopts optical, mechanical, electrical integration and microcomputer measurement and control technology, and has the function of statistical processing of test data, which can measure the whiteness (brightness) of various objects. The instrument conforms to GB3978: standard illuminator and illumination observation conditions. Simulate D65 illuminator illumination, adopt d/o illumination observation geometric conditions (ISO2469), the diameter of the diffuse sphere is φ150mm, the diameter of the test hole is φ30mm and φ19mm, and the light absorber is equipped to eliminate the influence of speciar reflected light of the specimen; the peak wavelength of the spectral power distribution of the R457 whiteness optical system is 457nm, and the half-height and width are 44nm; the RY optical system conforms to GB3979: object color measurement method.
★ Determination of ISO Brightness (i.e., R457 whiteness), for the fluorescent whitening sample, the fluorescence whitening produced by the emission of fluorescent substances can also be measured.
★ Determination of luminosity stimulation value Y10;
★ Determination of Opacity;
★ Determination of transparency;
★ Determination of light scattering coefficient and absorption coefficient;
★ It is possible to measure multiple times and give an arithmetic mean of a series of measurement results;
★ With power-off protection, zero, alignment and standard value and other data, even if there is a long-term power loss, it also protects the data from loss.