The pH may alter the potency of the disinfectant. The pH may alter the interaction between the disinfectant and the microbe that's why we must consider the ph of the location you plan to treat with a disinfectant.
In chemistry, pH, which historically stands for "hydrogen potential" (or "hydrogen power"), is a measure used to indicate the acidity or basicity of an aqueous solution. Acidic solutions (solutions with high concentrations of H+ ions) measured lower pH values than basic or alkaline solutions.
The pH scale is logarithmic and inversely indicates the concentration of hydrogen ions in the solution. The pH scale is traceable to a set of standard solutions whose pH is established by international conventions. A primary pH standard is determined in a transmission concentration cell by measuring the potential difference between a hydrogen electrode and a standard electrode such as a silver chloride electrode.
The pH of aqueous solutions can be measured using a glass electrode and a pH meter or a color change indicator. pH measurement is important in chemistry, agriculture, medicine, water treatment, and many other applications.
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