ASTM D 778 Standard Test Methods for Hydrogen Ion Concentration (pH) of Paper Extracts (Hot- Extraction and Cold-Extraction Procedures)
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ASTM D 778 Document Information:
Title
Standard Test Methods for Hydrogen Ion Concentration (pH) of Paper Extracts (Hot- Extraction and Cold-Extraction Procedures)
ASTM International
Publication Date:
Dec 10, 1997
Scope:
These test methods cover two procedures for determination of the
hydrogen ion concentration, expressed in terms of pH, of an aqueous
extract of paper.
These test methods may be applied to writing, printing, and
sized industrial papers.
These test methods are not intended to be used for determination
of pH of insulating papers, for that see Test Methods D 202.
Specifications may be based on Test Method A or Test Method B,
or both.
Where a specification or specific instructions or agreement to
use only one of these test methods is absent, determine pH using
both procedures, and interpret results based on Section 12.
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:
- cold extraction
- hot extraction
- industrial paper
- paper
- paper acidity
- paper aging
- paper alkalinity
- pH
- printing papers
- writing papers
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