Intelligent Digital Whiteness Meter

ZYWM-30A is a specialized instrument designed in accordance with international and domestic standards. It can be used to measure whiteness, brightness, transparency, opacity, light scattering, and light absorption coefficient.

It adopts d/0 geometry (diffused illumination, 0 degree viewing), effectively eliminating errors caused by variations in sample surface flatness and placement. Microcomputer technology enables automatic calibration of the zero point and reference value, which is retained for a period of time after a power outage. Its integrated switching power supply ensures low power consumption and a wide operating range.

Standards

 GB/T 7973       GB/T 7974

 GB/T5950       GB2913-82

 GB1840          GB13025, 2-91

 GB1543-88     GB10339-89

 ISO 2470        ISO 2471

Application Range

v  Paper, cardboard, plastic, pulp

v  Powder for salt, industrial salt, starch, calcium carbonate, talcum powder, etc.

v  Chemical pulp, cotton, chemical fiber & powder, textiles

v  Food, ceramics, enamel, building materials

Function

X  Measure ISO whiteness/brightness (R457 blue lightness)

X  Measure the fluorescence whitening produced by the emission of fluorescent substances (the sample contains fluorescent whitening)

X  Brightness Y10 (Green light diffuse reflection factor Ry)

X  Transparency (T)

X  Opacity (0)

X  light scattering coefficient S, light absorption coefficient A

Technical Parameters