| Model | PH-009(II) | PH-009(II)A |
| Range | 0.0~14.0pH | |
| Accuracy | ±0.1PH | |
| Resolution | 0.1PH | |
| Environment | 0 ~ 50°C; RH≤95℅ | |
| Automatic Temperature Compensation | 0~50℃ | |
| Battery Type | 4×1.5V(AG13) | |
| Dimensions | 170mm×36mm×23mm | |
| Weight | 85g | 105g |
| Electrode | fixed PH sensor | BNC E-201 |

