TAPPI T 579 om-12 (R2018)
Diffuse brightness of paper, paperboard and pulp (d/0) (ultraviolet level D65)
standard by Technical Association of the Pulp and Paper Industry, 2012
Full Description
TAPPI T 579 om-12 (R2018) 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.