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Digital Opacity tester

Digital Opacity tester

Product Details:


Product Description

Standard Features


Zero drift


Indication drift


Indication error


Repeatability error


Error of specular reflection


Sample size

Testing surface is not less than 30mm, thickness of sample is not exceeding 40mm


Single phase, 220V, 50Hz

Estimated Weight



This machine is mainly used to measure the whiteness of paper, paperboard, chemical fiber, textile, plastic, grain, starch, salt, white cement, porcelain clay and talcum powder, etc. It can also be used to measure the opacity and other optical performance of thin material.

  • Measure the diffuse blue reflectance factor (R457), which is also called blue brightness or ISO brightness.
  • Analyze whether the sample material contains fluorescence brightener, and measure the fluorescence brightness produced from fluorescence emission. I.e. brightness degree.
  • Measure the brightness stimulus value Y10 of sample, i.e. diffuse green reflectance factor Ry.
  • Measure the transparency, opacity, optical-absorption coefficient and light-scattering coefficient of samples.
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