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TAPPI T 515 om-09
- Visual Grading and Color Matching of Paper
- standard by Technical Association of the Pulp and Paper Industry, 01/01/2009
- Publisher: TAPPI
$50.00$100.00
1. Scope
1.1 This method describes the spectral, photometric, and geometric characteristics of a light source, theilluminating and viewing conditions, and the procedures to be used for the visual evaluation of color differences of paper,including those containing fluorescent whitening agents.
1.2 This method specifies light sources which are selected to accomplish three objectives: (a) simulation ofthe actual and illuminating conditions of ultimate use and (b) employment of two light sources which are spectrally verydifferent in order to exaggerate observable differences between sample and standard if any difference exists, and (c)employment of a UV radiator to detect the presence of fluorescent whitening agents (FWA) and assess their impact onfinal appearance.
1.3 This method is applicable when the testers have normal color vision.
1.1 This method describes the spectral, photometric, and geometric characteristics of a light source, theilluminating and viewing conditions, and the procedures to be used for the visual evaluation of color differences of paper,including those containing fluorescent whitening agents.
1.2 This method specifies light sources which are selected to accomplish three objectives: (a) simulation ofthe actual and illuminating conditions of ultimate use and (b) employment of two light sources which are spectrally verydifferent in order to exaggerate observable differences between sample and standard if any difference exists, and (c)employment of a UV radiator to detect the presence of fluorescent whitening agents (FWA) and assess their impact onfinal appearance.
1.3 This method is applicable when the testers have normal color vision.
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