This method describes how to determine the pH of boiler feed water using a universal indicator.
Boiler feed water for use in the production of beer and other foods
If the boiler feed water possesses a low pH, the service life of the boiler will be adversely affected. The higher the mineral content of the boiler feed water is, the higher the pH of the water must be.
The pH value of boiler feed water is determined using a universal indicator.