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date: 14 August 2020


The Oxford Companion to Beer
Horst DornbuschHorst Dornbusch

stands for “power of hydrogen” or “potential of hydrogen.” It is the chemical variable that denotes a solution’s acidity or alkalinity. The pH value of a solution indicates its concentration of hydrogen ions. As the concentration of hydrogen ions in a solution decreases, it becomes more alkaline (caustic), that is, its pH value increases. Conversely, as the level of hydrogen ions increases, the solution becomes more acid (corrosive), that is, its pH value decreases.... ...

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