High acid wines are frequently described as “tart” or “zippy”. pH in wine ranges from 2.6, which is punishingly acidic, to about 4.9 which is barely detectable as tart, because it’s much closer to the neutral 7.0 measurement.
Acidity Refers to pH: There are many types of acids in wine, but the overall acidity in wine is often measured in pH. Acidity is how sour a wine tastes. You generally perceive acidity as that mouthwatering, pucker-ing sensation in the back of your jaw. High acid wines are frequently described as “tart” or “zippy”. pH in wine ranges from 2.6, which is punishingly acidic, to about 4.9 which is barely detectable as tart, because it’s much closer to the neutral 7.0 measurement.