Min. Order:
1
Place of origin:
China
Light absorber is provided to eliminate the effect of specular reflection. Peak wavelength of spectral power distribution of R457 whiteness optical system is 457nm and its half-width is 44nm. 4. Measure and display the whiteness, Fluorescent whiteness (whitening rate) and opacity (%) etc. digitally. 5. Indication error: 0.5% 6. Sample size: Test plate diameter should not be less than 30mm while s
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