1. Hydrogen ion Concentration see hydrogen ion Concentration

2. The pH is an index of hydrogen ion concentration of the liquid .

3. Acid output was calculated by multiplying the hydrogen ion concentration by the volume of the gastric aspirate.

4. This is a symbol expressing hydrogen ion concentration in a solution; it is a measure of relative acidity or alkalinity.

5. Buffer, in chemistry, solution usually containing an acid and a base, or a salt, that tends to maintain a constant hydrogen ion concentration

6. Alkalosis is a condition developed from a reduction in the hydrogen ion concentration of the arterial blood plasma. Basically, it arises when the body fluids have an excess of alkali or too many bases