Standard Test Method for Opacity of Paper (15° Diffuse Illuminant
A , 89 % Reﬂectance
Backing and Paper Backing) 1
This standard is issued beneath the ﬁxed designation d 589; the number immediately following the designation suggests the yr of unique adoption or, within the case of revision, the 12 months of last revision. Quite a number in parentheses indicates the 12 months of final reapproval. A superscript epsilon (e) indicates a piece of writing alternate since the closing revision or reapproval.
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