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TAPPI T 435 OM
Hydrogen ion concentration (pH) of paper extracts (hot extraction method)
Organization:
TAPPI - TAPPI
Year: 2011
Abstract: 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."
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."
Subject: Acidity
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| contributor author | TAPPI - TAPPI | |
| date accessioned | 2017-09-04T15:12:16Z | |
| date available | 2017-09-04T15:12:16Z | |
| date copyright | 2002.01.01 (R 2011) | |
| date issued | 2011 | |
| identifier other | LWSSKEAAAAAAAAAA.pdf | |
| identifier uri | http://yse.yabesh.ir/std;jsery=auth=177/handle/yse/10729 | |
| description abstract | 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." | |
| language | English | |
| title | TAPPI T 435 OM | num |
| title | Hydrogen ion concentration (pH) of paper extracts (hot extraction method) | en |
| type | standard | |
| page | 5 | |
| status | Active | |
| tree | TAPPI - TAPPI:;2011 | |
| contenttype | fulltext | |
| subject keywords | Acidity | |
| subject keywords | Alkalinity | |
| subject keywords | Extraction | |
| subject keywords | Paper | |
| subject keywords | pH |