This instrument is used to determine the ISO brightness (R457 whiteness) of powdery objects, and can also measure the fluorescence whiteness produced by the reflection of fluorescent substances on the fluorescent whitening sample. It is widely used in kaolin, calcium carbonate, talc, barite, activated clay, barium sulfate, magnesium oxide, flour, cement and other powder samples. Paper, paper products, paper industry, textile, printing and dyeing, plastics, ceramics, enamel, building materials, paints, chemicals, grain, salt, sugar and other production and commodity inspection departments that need to determine whiteness.
1. The appearance of this instrument is novel and compact, and the professional circuit design effectively ensures the accuracy and stability of the measurement data.
2. The instrument has power-off protection, and the calibration data will not be lost after power-off.
3. This instrument is equipped with standard RS232 interface, which can be used for communication with microcomputer software.
4. Simulate D65 illuminator lighting. The CIE 1964 supplemental chromaticity system and the CIE 1976 (L*a*b*) color space chromatic aberration formula were used
5. Use D/O illumination to observe the geometric conditions. The diameter of the diffuser ball is φ150mm, the diameter of the test hole is φ30mm, and the light absorber is provided to eliminate the influence of speciar reflection light.
6. The results can be measured multiple times for statistics and the arithmetic mean value can be obtained.
GB/T 19281 、 GB/T 23774