Mini-Encyclopedia of Papermaking Wet-End Chemistry
Part Two: Definitions and Concepts

Acidity

The acidity or "total acidity" of an aqueous mixture equals the amount of strong base (such as NaOH) required to raise the pH of a unit volume or mass of sample to a value of 8.3. In general we cannot estimate a sample's total acidity by knowing its pH. Mixtures that contain weak acids such as alum tend to have high values of total acidity.

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This page is maintained by Martin hubbe, Associate Professor of Wood and Paper Science, NC State University, m_hubbe@ncsu.edu .