PH

A measure of the strength of the relative acidity versus the relative alkalinity of wine (or any liquid) on a logarithmic scale of 0 to 14. The lower the number is below 7 (the neutral pH of water), the greater the relative acidity. Winemakers consider the pH of a wine in relationship to other factors (ALCOHOL, TANNIN, EXTRACT, and the like) to determine if the wine is in BALANCE. As grapes mature, plotting the change in the pH of their pulp is a way of determining ripeness.

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