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| Model | KL-139A |
| Measuring Range | 0~1999PPm(mg/L) |
| Accuracy | ±2℅F·S |
| Resolution | 1PPm(mg/L) |
| Display | 4-digital LCD |
| Environment | Humidity:≤95℅ |
| ATC | 0℃~50℃ |
| Power Supply | 4×1.5V(AG13) |
| Dimensions | 165×26×26(mm3) |
| Weight | 63g |