TAPPI T 525
2012 Edition, January 1, 2012
Diffuse brightness of paper, paperboard and pulp (d/0) – ultraviolet level C
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Description / Abstract:
This method is for the determination of the brightness of white,
near-white, and naturally colored pulp, paper, and paperboard.
Brightness is a commonly used industry term for the numerical value
of the reflectance factor of a sample with respect to blue light of
specific spectral and geometric characteristics. This method
requires an instrument employing diffuse illumination and 0°