Standard: TAPPI T 509

HYDROGEN ION CONCENTRATION (PH) OF PAPER EXTRACTS (COLD EXTRACTION METHOD)

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Scope:

This method measures the hydrogen ion concentration of a cold aqueous extract (unfiltered) of paper, expressed in terms of pH value.

It is suitable for writing, printing, and sized industrial papers, but is not intended for unbuffered types such as insulating and condenser papers. The determined values may not be exact in a fundamental sense and should not be interpreted in terms of solution theory. The pH values are empirically correlated with end use requirements and paper qualities. This method avoids change of acidity or alkalinity resulting from heat-induced hydrolysis.

A hot water extraction method is described in TAPPI T 435, "Hydrogen Ion Concentration (pH) of Paper Extracts (Hot Extraction Method)."

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

Organization: TAPPI
Document Number: tappi t 509
Publish Date: 2002-01-01
Page Count: 5
Change Type: REAF
Available Languages: EN
DOD Adopted: NO
ANSI Approved: NO
Most Recent Revision: YES
Current Version: YES
Status: Active

Document History

Document # Change Type Update Date Revision Status
TAPPI T 509 Change Type: REAF Update Date: 2002-01-01 Revision: 02 Status: ACTV
TAPPI T 509 Change Type: Update Date: 2002-01-01 Revision: 02 Status: ACTV

This Standard References

Showing 10 of 13.

AFNOR NF Q 03
SAI AS/NZS 1301.421
SFS 4278 SCAN-P 14:65
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Standards That Reference This Standard

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