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TAPPI T 435

Hydrogen ion concentration (pH) of paper extracts (hot extraction method)

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Organization: TAPPI
Publication Date: 1 January 2016
Status: active
Page Count: 5
scope:

This method measures the hydrogen ion concentration, expressed in terms of pH, of an aqueous extract of paper obtained by hot extraction (unfiltered and extracted by boiling water for one hour).

It may be applied to writing, printing and sized industrial paper, but it is not intended for unbuffered types such as electrical insulating and condenser papers. Values determined by this method will reflect changes resulting from heat-induced hydrolysis. Additives, such as those used in filled and coated papers can have an effect on the extract pH.

The cold extraction method is described in TAPPI T 509, "Hydrogen Ion Concentration (pH) of Paper Extracts (Cold Extraction Method)."

Surface pH measurement of paper is described in TAPPI T 529, "Surface pH Measurement of Paper."

Document History

TAPPI T 435
January 1, 2016
Hydrogen ion concentration (pH) of paper extracts (hot extraction method)
This method measures the hydrogen ion concentration, expressed in terms of pH, of an aqueous extract of paper obtained by hot extraction (unfiltered and extracted by boiling water for one hour). It...
January 1, 2002
Hydrogen Ion Concentration (pH) of Paper Extracts (Hot Extraction Method)
A description is not available for this item.
January 1, 2002
Hydrogen ion concentration (pH) of paper extracts (hot extraction method)
This method measures the hydrogen ion concentration, expressed in terms of pH, of an aqueous extract of paper obtained by hot extraction (unfiltered and extracted by boiling water for one hour). It...
January 1, 2002
Hydrogen Ion Concentration (pH) of Paper Extracts (Hot Extraction Method)
A description is not available for this item.
January 1, 1996
Hydrogen Ion Concentration (pH) of Paper Extracts (Hot Extraction Method)
A description is not available for this item.

References

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