TDS20 Value Pocket TDS Tester Kit

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.

  • 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).
Meter’s Technical Specs
TDS Range 0 to 100.0 ppm, 0 to 1000 ppm, 0 to 10.00 ppt
Resolution 0.1/1 ppm; 0.01 ppt
Accuracy ±1% F.S
Calibration Points Automatic 1 to 2 points
Temperature Compensation Auto Temperature Compensation

0 to 50 °C (32 to 122°F)

Temp. Range 0 to 50°C (32 to 122°F)
Resolution 0.1°C
Accuracy ±0.5°C
LCD 180° Viewing Angle LCD
Stable Reading Indication Smiley Face icon
Low-Battery Warning Battery icon flashing, reminder of battery replacement
Self-Diagnosis Yes
Heads-Up Function No
Auto. Power-Off Yes, auto power-off in 8 minutes without operation
Waterproof Rating IP67; Floatable
Power DC3V, AAA batteries*4
Battery Life Continuous operation up to 1000 hours
Dimensions& Weight Tester: (40*31*178) mm/ 107g With case_(190*165*40) mm/ 438g
Electrode’s Technical Specs
Application Regular water solution testing, such as pools and spas, hydroponics, tap water, drinking water, water treatment, waste water treatment, aquaculture, etc.
Type of Sensor BPB (Brush-Resistant Platinum Black)
Replaceable No
Temperature sensor Yes
Range 0.1 μS to 20.00 mS
Temperature Range 0 to 50°C (32 to 122°F)