TAPPI/ANSI T 425 om:2011(R2021)
Current
Current
The latest, up-to-date edition.
Opacity of paper (15/d geometry, illuminant A/2°, 89% reflectance backing and paper backing)
Available format(s)
Hardcopy , PDF
Language(s)
English
Published date
14-10-2021
Opacity is a fundamental optical property of paper as a whole, yet the measurement of opacity is determined by a ratio of reflectance measurements.
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