| TDS | Measuring range |
(0~5.00) ppt， Divided into three sections, automatic switching range： （0~49.9）ppm （50~499）ppm （0.50~5.00）ppt |
| Resolution | 0.1/1ppm；0.01 ppt | |
| Accuracy | ±1%FS | |
| Temperature compensation | (0~50)℃（Auto） | |
| Other technical parameters | Automatic Calibration | 1point calibration（4.20 ppt） |
| Power | 2 AAA batteries, 1.5V × 2, more than 100 hours of continuous using | |
| Size and weight | 39×25×176 mm/ 87g | |
| Waterproof | IP57 |
ชุดมาตรฐานประกอบด้วย
| 1. 5031TDS Pocket Tester | 1pc |
| 2. TDS Calibration Solution （4.20 ppt） | 2bottle |
| 3. AAA batteries | 2pcs |
| 4. Manual | 1pc |
