*depending on model
| Component | pH | EC/ppm | Temperature |
| Range | 0.0-14.0 pH | 0-9990 ppm (202/203) 0-9990 μS/cm (204) |
5-32°C / 40-90°F |
| Accuracy | ± 0.1% | ± 2% | ± 1°C / ± 1°F |
| Resolution | 0.1 pH | 1 μS/cm, 1 ppm | 1°C / 1°F |
| Calibration | 2 point, manual | 1 point, manual | 1 point, manual |
| Operating Environment: 20° to 80°C / -4° to 176°F | |||