| Parameter | Device |
| Free chlorine | PCE-CP 10, PCE-CP 20, PCE-CP 30 |
| Chlorine dioxide in chlorine-free water | PCE-CP 30 |
| Bromine in chlorine-free water | PCE-CP 30 |
| Ozone | PCE-CP 30 |
| Chlorine dioxide in chlorine-contaminated water | PCE-CP 30 |
| Bromine in chlorine-contaminated water | PCE-CP 30 |
| Total chlorine | PCE-CP 10, PCE-CP 20, PCE-CP 30 |