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1997 Edition, December 10, 1997

Complete Document

Standard Test Method for Opacity of Paper (15° Diffuse Illuminant A, 89% Reflectance Backing and Paper Backing)

Includes all amendments and changes through Reapproval Notice , 2007

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Product Details:

  • Revision: 1997 Edition, December 10, 1997
  • Published Date: January 2007
  • Status: Not Active, See comments below
  • Document Language: English
  • Published By: ASTM International (ASTM)
  • Page Count: 5
  • ANSI Approved: Yes
  • DoD Adopted: No

Description / Abstract:

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.