TDS-240 3-in-1 pH / TDS / Temperature Meter Combo Water Quality Tester Digital Pen-Type with ATC 0.00~14.00pH 0~1999mg/L(ppm) for Laboratories, Hydroponics, Aquariums, Pool, Spa

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A 3-in-1 Water Quality Tester designed to simultaneously measure pH / TDS / Temperature in one unit. All pH readings are automatically temperature compensated (ATC). Ideal for environment monitoring, laboratories, hydroponics, aquariums, pool, spa, food processing and other water testing procedure.

This is a combo meter specially designed that separates 2 electrodes in one pen-type tester. The accuracy of both pH & TDS measurement can be enhanced by this design. Moreover, pH electrode is detachable and replaceable. After using for a long period of time, it's no longer necessary to replace the whole tester even if the electrode is contaminated. This saves your cost by just replacing the ph electrode. 



  • Pen-tye 3-in-1 pH/ TDS/Temp meter
  • Simple calibration process
  • 2-point pH calibration
  • Separated pH & TDS electrodes design enhances the accuracy
  • Detachable & Replaceable ph electrode
  • Automatic Temperature Compensation
  • Complete kit set comes with 2 pH and TDS calibration solution


  • Measuring Range:
    • pH: 0.00~14.00pH
    • TDS: 0~1999mg/L(ppm)
    • Temperature: 0~55°C
  • Resolution:
    • pH: 0.01pH
    • TDS: 1mg/L(ppm)
    • Temperature: 0.1°C
  • Accuracy:
    • pH: ±0.1pH
    • TDS: ±2%F.S.
    • Temperature: ±0.1°C
  • ATC: 0~50°C
  • Power Supply: 4 x 1.5V (AG13 button batteries)
  • Operating Temperature: 0~50°C
  • Dimensions: 170 x 40 x 23mm
  • Weight: 100g

Set Includes:

  • 1 x 3-in-1 Water Quality Tester
  • 1 x Removeable pH electrode (installed)
  • 2 x pH Calibration Buffer Solution (pH 4.003 / pH 6.864)
  • 1 x TDS Calibration Buffer Solution (TDS 1382)
  • 1 x Screwdriver 
  • 4 x 1.5V AG13 battery
  • English instruction manual
  • Standard Factory Package

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