Quick Answer: The Water Testing Meter (TDS/EC Meter) measures total dissolved solids, electrical conductivity and temperature of water samples, with TDS and EC ranges of 0 to 9,990. Readings show on a backlit LCD and are corrected by automatic temperature compensation.
Last updated: October 2026
Key Features
Three readings: TDS, EC and temperature
TDS 0 to 9,990 ppm; EC 0 to 9,990 µS/cm
Automatic Temperature Compensation (ATC) to 25°C
Titanium alloy electrodes
Hold button and auto-shutoff
Factory-calibrated, with manual re-calibration against standard solutions
Technical Specifications
Specification
Value
Parameters
TDS, EC and temperature
TDS range
0 to 9,990 ppm
EC range
0 to 9,990 µS/cm
Temperature range
0.1 to 80.0°C (32.0 to 176.0°F)
Accuracy
± 2% full scale
Resolution
1 ppm; 1 µS/cm; 0.1°C
Calibration
Factory-calibrated; manual re-calibration possible
Display
Backlit multi-line LCD
Compensation
Automatic (ATC)
Power
3.0V lithium button cell
About This Product
Environmental science classes dip the meter into tap, river, pond or bottled water to compare dissolved mineral content, and hydroponics projects use it to check nutrient solutions. Seeing TDS and EC side by side helps students connect conductivity with the amount of dissolved salt.
Frequently Asked Questions
What units does the TDS/EC meter display?
TDS in parts per million (ppm), EC in microsiemens per centimetre (µS/cm), and temperature in °C or °F.
Can the water testing meter be re-calibrated?
Yes. It is factory-calibrated and can be re-calibrated manually against standard solutions.
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