pH and Alkalinity?

There is a lot of confusion between pH and Total Alkalinity so what is the difference?

The pH is a very important factor. Certain chemical processes can only take place when water is at a certain pH. For instance, chlorine reactions only take place when the pH has a value of between 6,5 and 8.

The pH is an indication for the acidity of a substance. It is determined by the number of free Hydrogen ions (H+) in a substance.

The result of a pH measurement is determined by a consideration between the number of H+ ions and the number of hydroxide (OH-) ions. When the number of H+ ions equals the number of OH- ions, the water is neutral. It will than have a pH of about 7.


Total Alkalinity

The Definition of Alkalinity is ; A measure of the amount of acid that a given volume of water can absorb without substantially changing its pH.

The total amount of alkaline materials present in water. Total Alkalinity is a pH buffer – the measure of the pH’s ability to change. If too high (above 200ppm), it makes pH hard to adjust. If too low (below 80ppm), the pH will fluctuate excessively.



The post pH and Alkalinity? appeared first on Deep End Pools.