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Lab Expo Pocket TDS Tester 25-PTS102 measures total dissolved solids from 0.05 to 10.00 ppm with ±1% full-scale accuracy using a platinum sensor and automatic temperature compensation from 0°C to 50°C. It features a one-point calibration with 7447 ppm solution, manual data hold, LCD display, and powers off automatically after eight minutes of inactivity. Operates on three G13A batteries for approximately 150 hours within 0°C to 60°C ambient conditions. Suitable for water quality monitoring in laboratories, industrial processes, environmental testing, and educational facilities requiring precise TDS assessment.
| TDS Range | 0.05 to 10.00 ppm |
| TDS Accuracy | ±1% F.S. |
| TDS Factor | 0.4 to 1.0 (default 0.5) |
| Calibration Points | 1 Point |
| TDS Type Range | Mid Range TDS |
| Calibration Solutions | 7447 ppm |
| Type of Sensor | Platinum Sensor |
| Temperature Compensation | 0°C to 50°C, Automatic |
| Temperature Coefficient | 2% per °C |
| Normalization Temperature | 25°C |
| Operating Temperature | 0°C to 60°C, 32°F to 140°F |
| Connector | 6 Pin |
| Display | LCD Screen |
| Data Hold Function | Manual |
| Battery Life | Approximately150 Hours |
| Power Off | Manual or Automatic (8 Minutes after Last Key is Pressed) |
| Power Supply | 3 × 1.5 V “G13A” |
| Dimensions | 185 × 40 mm |
| Weight | 100 g |
FunctionImplementationWater quality monitoring0.05 to 10.00 ppm TDS Range enables precise measurement in wastewater and aquariumsDrinking system testing±1% F.S. TDS Accuracy supports reliable assessment of potable water sourcesSwimming pool maintenanceTemperature Compensation 0°C to 50°C ensures accurate readings under varying conditionsField operations useBattery Life Approximately150 Hours allows extended on-site testing sessionsCalibration verificationCalibration Solutions 7447 ppm provides reference point for single-point adjustment
G134 button cell batteries
TDS standard solution (7447ppm)
7447ppm TDS standard solutions