I understand that ORP measurements are not reliable for determining the chlorine concentration in swimming pools and spas due to cyanuric acid presence. In case of using bromine for sanitizing a swimming pool or a spa and cyanuric acid is not present, is it then possible to use the ORP measurements to determine the bromine concentrations? Would it be a reliable method?
ORP and Bromine
- Thread starter Tepelus
- Start date
The short answer is no.
ORP is influenced by many factors and getting reliable equivalents to FC or Br can be very tricky and usually is that at best. You can experiment, but it is usually quite difficult to be consistent. Then, there is calibration, sometimes needed very frequently with ORP.
ORP is influenced by many factors and getting reliable equivalents to FC or Br can be very tricky and usually is that at best. You can experiment, but it is usually quite difficult to be consistent. Then, there is calibration, sometimes needed very frequently with ORP.
You would basically use ORP with bromine the same way you would use it with chlorine, for process control manually measuring the chlorine or bromine level with a good test kit and then setting a setpoint on the ORP controller. Even then, you may find that using ORP to control the chlorine or bromine level that it varies for reasons that have nothing to do with those levels. Sunlight, hydrogen gas, high bather load buildup of oxidizable organics, etc.
Thank you for your reply. I appreciate the time you spent to answer my questions. All is clear now.