ASTM-D919 Historical Revision Information
Standard Test Method for Copper Number of Paper and Paperboard (Withdrawn 2009)

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Standard Test Method for Copper Number of Paper and Paperboard (Withdrawn 2009)


1.1 This test method (1, 2, 3, and 4) covers the determination of the copper number of bleached and purified paper and paperboard, except those containing calcium sulfite, zinc sulfide, melamine resin, urea-formaldehyde resin, starch, rosin size, or other copper-reducing nonfibrous materials. Paper containing such additives can be tested only if the amount and reducing power of the added material is known.

1.2 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.

Significance and Use

The copper number can be regarded as an index of those impurities in cellulose such as oxycellulose, hydrocellulose, lignin, and sugars which possess reducing properties. It is valuable for detecting changes accompanying deterioration and may, therefore, be considered as a test for indicating the permanence of paper. In parchment and grease-proof papers, copper number is considered to give an indication of the degree of parchmentizing.


copper number; paper; permanence; ICS Number Code 85.060 (Paper and board)

To find similar documents by ASTM Volume:

15.09 (Paper; Business Imaging Products)

To find similar documents by classification:

85.060 (Paper and board)

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Document Number


Revision Level

1997 R02 EDITION



Modification Type


Publication Date

Aug. 1, 2002

Document Type

Test Method

Page Count

3 pages

Committee Number