ASTM D 589 Standard Test Method for Opacity of Paper (15° Diffuse Illuminant A, 89% Reflectance Backing and Paper Backing)
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ASTM D 589 Document Information:
Title
Standard Test Method for Opacity of Paper (15° Diffuse Illuminant A, 89% Reflectance Backing and Paper Backing)
ASTM International
Publication Date:
Dec 10, 1997
Scope:
This test method covers the determination of the opacity of
paper.
Two different types of "white" backing are specified, leading to
two different opacity values, in accordance with Section 3.
This test method employs 15° diffuse geometry, Illuminant A/2°
and 89 % reflectance backing or paper backing. For the measurement
of opacity with d/0° geometry, Illuminant C/2° and paper
backing (see TAPPI T 519).
This standard does not purport to address all of the safety
concerns, if any, associated with its use. It is the responsibility
of the user of this standard to establish appropriate safety and
health practices and determine the applicability of regulatory
limitations prior to use.
Keywords:
- absorption coefficient
- absorption power
- contrast ratio
- opacity (89 % reflectance backing)
- opacity meter
- opacity (paper backing)
- paper
- printing opacity
- scattering power
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