a measurement of the acid or alkali content of a solution, expressed on a scale of 0 to 14.0. A pH of 7.0 is considered neutral or balanced. The lower the pH value, the more acidic the substance. The higher the pH value, the more alkaline the substance.
LABENSKY, SARAH R.; HAUSE, ALAN M.; LABENSKY, STEVEN R.; MARTEL, PRICILLA, ON COOKING: A TEXTBOOK OF CULINARY FUNDAMENTALS, 4th Edition, ©2007. Electronically reproduced by permission of Pearson Education, Inc., Upper Saddle River, New Jersey.