Measuring water quality
Measuring water disinfectants
- Free Available Chlorine (FAC): Chlorine that has not yet reacted with any organic material.
- Combined Available Chlorine (CAC): Chlorine that has already reacted with organic material present in a hot tub or pool; therefore, it is much less effective.
- Total Available Chlorine (TAC): Is the sum of free available chlorine plus the combined available chlorine as per the formula TAC=FAC+CAC.
Measuring pH and water quality
|Free Chlorine (less than 30ºC/86ºF)||0.5ppm||2.0-5.0ppm||5.0ppm|
|Free Chlorine (more than 30ºC/86ºF)||1.5ppm||3.0-5.0ppm||5.0ppm|
|Bromine (less than 30ºC/86ºF)||1.5ppm||3.0-5.0ppm||5.0ppm|
|Bromine (more than 30ºC/86ºF)||2.5ppm||5.0-8.0ppm||8.0ppm|
|Total Alkalinity CaCo3||80ppm||||120ppm|
|Cyanuricacid (outdoor pools only)||30ppm||30-50ppm||80ppm|
Getting rid of excess chlorine
Page reviewed: 28 Sep 2016 4:17pm