Problems Measuring Extreme pH Extremely acidic and basic solutions may be encountered in laboratory situations. In amperometric pH measurements hydrogen generation occurs on a noble metal. For specific information on pH maintenance please click here. Since many reactions in everyday life are affected by pH, it's useful to know how to calculate and measure it.
If the color becomes green-yellow, the pH is 11 to Alkaline solutions are characterized by a lower hydrogen ion activity or higher hydroxide ion activity, respectively and a pH measurement value above 7. In the science classroom, there are many activities that require pH testing.
Another pH value measurement possibility is amperometry.