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TAPPI T 579 om-12
- Diffuse brightness of paper, paperboard and pulp (d/0) (ultraviolet level D65)
- standard by Technical Association of the Pulp and Paper Industry, 05/01/2012
- Publisher: TAPPI
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This method determines the brightness of white, near-white, and naturally colored pulp, paper, andpaperboard. Brightness is a commonly used industry term for the numerical value of the reflectance factor of a samplewith respect to blue light of specific spectral and geometric characteristics. This method requires an instrumentemploying diffuse illumination and 0° viewing geometry.
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