TAPPI brightness- ultra-violet light component of TAPPI brightness is the lowest of any standard. light hits the sample form only 1 particular angle. North American standard. quantifies the brightness of paper as it would be perceived in an environment that is illuminated with a mixture of cool-white fluorescence and some filtered daylight.
ISO brightness- European standard. quantifies the brightness of paper as it would be perceived in an environment that is illuminated with a mixture of cool-white fluorescence and some unfiltered daylight. fluorescence present in a paper sample, which can provide a significant contribution to brightness, will be stimulated more using the ISO standard versus TAPPI. higher brightness versus TAPPI for the same paper.
Lasal Photo Gloss 270- open- light painting
Lasal Dual Semigloss 330- people-
Lasal Exhibition Luster 300- people-
Colorado Fiber Satin 245- thng- blue bonnet
Slickrock Metallic Silver 300- place
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