HM Digital

PH-200 Waterproof pH Meter

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$67.99 $79.99

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Ideal for all liquid pH testing applications. Great for checking tap water and product water from your RO/DI system. Also works well for testing system water in hydroponics, aquaculture systems, labs & scientific testing environments, pools, and much more.



  • Measures pH and Temperature
  • Auto-ranging three point calibration with digital fine tuning
  • Includes 4 pH buffer solution in a sponge embedded in a clear cap
  • Waterproof housing (IP-67 rating)
  • Simultaneous temperature display
  • Measurement Range: 0-14 pH
  • Digital automatic calibration (one point), with digital fine tuning
  • Auto-off function, data-hold function, and low-battery indicator
  • Display: large and easy-to-read LCD screen includes simultaneous temperature reading
  • Factory Calibrated: The PH-200 meter is three-point factory calibrated to 4, 7, and 10 pH. The meter can be recalibrated with digital calibration using the push buttons, rather than a screwdriver.
  • Includes a cap, batteries, lanyard, and pH 7.0 buffer



  • pH Range: 0 - 14
  • Temperature Range: 0-80 °C; 32-176 °F
  • Resolution: 0.01 pH; Temperature resolution is 0.1 °C/F
  • Accuracy: +/- 0.1 pH Temperature accuracy is +/-1%
  • Calibration: Digital automatic calibration (one point) with digital fine tuning
  • Electrode: Replaceable glass sensor and reference tube electrodes
  • Housing: IP-67 Waterproof (submersible; floats)
  • Power source: 2x AAA Batteries (included)
  • Dimensions: 18.5 x 3.4 x 3.4 cm (7.3 x 1.3 x 1.3 inches)


What's Included?

  • 1x PH-200 Pen
  • 2x AAA Batteries
More Information
UPC 891144000021
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Product Questions

Please I want to know if you have the replaceable sensor for the DM PH-200 Waterproof pH Meter and the cost thereof. Thank you
Question by: Paul on Nov 5, 2017, 9:54 AM

We do not carry replacement parts for that sensor specifically. You may be able to find them from HM Digital directly, in which case I've included their contact info below. :-)
HM Digital – 800-383-2777 info@hmdigital.com
Answer by: Randy on Nov 26, 2017, 10:36 AM