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ASTM D548-97(2002)

Current Revision

Standard Test Method for Water-Soluble Acidity or Alkalinity of Paper

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1.1 This test method covers the determination of the water-soluble acidity or alkalinity of paper.

1.2 It may be applied to writing, printing, and sized industrial paper but is not intended for testing electrical insulating papers nor those containing alkaline fillers or coatings such as casein or calcium carbonate.

1.3 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.


The pH determination measures the extent to which the paper alters the hydrogen-hydroxyl ion equilibrium of pure water, and the acidity-alkalinity determination measures the quantity of extracted ionic material that contributes to that equilibrium change. These tests are useful for routine acceptance testing, research work, or the evaluation and classification of different papers.

SDO ASTM: ASTM International
Document Number D548
Publication Date Dec. 10, 1997
Language en - English
Page Count 4
Revision Level 97(2002)
Supercedes
Committee D06.92
Publish Date Document Id Type View
Dec. 10, 1997 D0548-97R02 Revision
Dec. 10, 1997 D0548-97 Revision