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| Model | KL-139B | |
| Measuring Range | 0~1999PPm(mg/L) | |
| Accuracy | ±2℅F·S | |
| Resolution | 1PPm(mg/L) | |
| Display | 4-digital LCD | |
| Environment | Humidity:≤95℅ | |
| ATC | 0°C~50°C | |
| Power Supply | 4×1.5V(AG13) | |
| Dimensions | 60×55×23(mm3) | |
| Weight | 60g | |