The TAPPI T 435 standard specifies a method for determining the hydrogen ion concentration (ph value) of paper extracts by thermal extraction. This method is suitable for writing, printing and sizing industrial papers, but not for unbuffered types such as insulating and capacitive papers. Specifically, the test assesses the acid alkalinity of the paper by extracting the paper sample in boiling water for one hour and measuring the pH value of the extract.
This summary is not the original standard text and is for reference only. For accurate information, please obtain it through official channels.
| Status | Active | ||
|---|---|---|---|
| CCS | ICS | ||
| Release Date | 2016-01-01 00:00:00 | Implementation Date | |