TDS20 Value Pocket TDS Tester Kit

Cat. No.

The Apera Instruments TDS20 Value Pocket TDS Tester is simply the most reliable pocket conductivity ppm tester/meter with the best value for all kinds of routine testing, including tap water/drinking water testing, agriculture, aquaculture, swimming pool, education, etc.

For more information please call +1 (860) 436-9221
or email us at
For more information please call +1 (860) 436-9221
or email us at

Product Description:

  • The unique platinum black conductivity probe technology ensures wide range measurement with accuracy and consistency.
  • An ultra clear 180˚ viewing angle screen with temp./TDS value dual display and indications of completed auto calibrations and stable readings.
  • Complete kit with calibration solutions (1413 µs and 12.88 mS), AAA batteries, and a lanyard all in a rugged carrying case.
  • 1-2 points auto calibration and 0 to 50˚C auto temp. compensation, ±1% F.S accuracy with 0 to 20.00 mS/cm wide conductivity measuring range
  • Self-diagnosis with an out-of-range warning and incorrect calibration reminders.
  • IP67 Water-proof and dust-proof, floats on water so no need to worry if you drop it in the water by accident.
  • 200 hours' continuous operation powered by AAA batteries (with low power warning and auto power off in 8 min if no operation).

Product Specifications:

Meter's Technical Specs
Range0 to 100.0 ppm, 0 to 1000 ppm, 0 to 10.00 ppt
Resolution0.1/1 ppm; 0.01 ppt
Accuracy±1% F.S
Calibration PointsAutomatic 1 to 2 points
Temperature CompensationAuto Temperature Compensation
0 to 50 °C (32 to 122°F)
Range0 to 50 °C (32 to 122°F)
LCD180° Viewing Angle LCD
Stable Reading IndicationSmiley Face icon
Low-Battery WarningBattery icon flashing, reminder of battery replacement
Heads-Up FunctionNo
Auto Power-OffYes, auto power-off in 8 minutes without operation
Waterproof RatingIP67; Floatable
PowerDC3V, AAA batteries*4
Battery LifeContinuous operation up to 1000 hours
Dimensions& WeightTester: (40*31*178) mm/ 107g With case_(190*165*40) mm/ 438g
Electrode's Technical Specs
ApplicationRegular water solution testing, such as pools and spas, hydroponics, tap water, drinking water, water treatment, waste water treatment, aquaculture, etc.
Type of SensorBPB (Brush-Resistant Platinum Black)
Temperature sensorYes
Range0.1 μS to 20.00 mS
Temperature Range0 to 50°C (32 to 122°F)

Additional Resources and Information:

 TSD20 Instruction Manual

TDS20 Value Pocket TDS Tester Kit


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