TAPPI/ANSI T 428 om:2021
Superseded
View Superseded by
Hot water extractable acidity or alkalinity of paper
Hardcopy , PDF
English
10-14-2021
07-18-2026
| DocumentType |
Official Test Method
|
| Pages |
5
|
| PublisherName |
Technical Association of the Pulp & Paper Industry
|
| Status |
Superseded
|
| SupersededBy | |
| Supersedes |
This method, based on the work of Kohler and Hall (1), measures the titratable acidity or alkalinity (end point at pH 7.0) of an aqueous extract of paper (filtered and extracted by boiling water for 1 h).
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