Lab glossary
pH
Minus the logarithm (base 10) of the hydrogen-ion activity of a solution. pH 7 is neutral at 25 °C; each unit is a tenfold change in acidity.
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Minus the logarithm (base 10) of the hydrogen-ion activity of a solution. pH 7 is neutral at 25 °C; each unit is a tenfold change in acidity.
Browse the Equipment Explorer and Test Method Finder to see this term in context.