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TDS3 Handheld Meter

$22.20 $15.09 (You save $7.11)
Calculated at checkout

Product Description

Ideal for all water purification applications, wastewater regulation, aquaculture, hydroponics, and colloidal silver. Perfect for both consumer or commercial use. Carry one in your pocket or toolbox at all times!


  • Ideal for commercial use. Includes a carrying case with belt clip.
  • Highly efficient and accurate due to its advanced microprocessor technology.
  • Hold Function saves measurements for reading and recording.
  • Auto-off function shuts meter off automatically after 10 minutes of non-use to conserve battery life.
  • Measurement Range: 0-9990 ppm. From 0-999 ppm, reads in increments of 1 ppm. From 1000 to 9990 ppm, reads in increments of 10 ppm, indicated by a blinking 'x10' image.
  • Built-in digital thermometer
  • Large, easy-to-read LCD screen.
  • Factory Calibrated with a 342 ppm NaCl solution. Meters can be recalibrated with a mini-screwdriver.
  • Also available in "x10" mode: reads in increments only of 10 ppm (0-9990 ppm).


TDS Range: 0 - 9990 ppm (mg/L)
Temp. Range: 0 - 176 degrees Fahrenheit
Resolution: 1 ppm, 1 degree Celsius (also available in 10 ppm)
Accuracy: +/- 2%
Conversion Factor: NaCl (avg. 0.5)
ATC: Built-in sensor for Automatic Temperature Compensation of 33 to 122 degrees Fahrenheit
Power source: 2 x 1.5V button cell batteries (included) (LR44 or equivalent)
Battery life: 1000 hours of use
Dimensions: 6.1 x 1.25 x 1 inches
Weight with case: 2.7 oz
Weight without case: 2 oz

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Product Reviews

  1. TDS-3 Calibration 3 Star Review

    Posted by on 2nd Sep 2017

    My new TDS 3 read 370 PPM in the 342 PPM calibration solution. An older one read 390. I calibrated them to 342 assuming the solution was accurate

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