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Home » Saltwater Aquarium Supplies  » Testing Equipment  » Monitors & Controllers  » Single Item Monitors & Controllers  »  HM Digital PH-80 Handheld Digital pH Meter
HM Digital PH-80 Handheld Digital pH Meter

HM Digital PH-80 Handheld Digital pH Meter

Average Rating 3.5 3
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HM Digital PH-80 Handheld Digital pH Meter Information

Product Manuals & Documentation

The PH-80 is an economically priced, reliable pH meter that is ideal for testing applications such as hydroponics & gardening, pools & spas, aquariums & reef tanks, water ionizers, drinking water and more.


  • Measures pH and Temperature
  • One-touch automatic digital calibration
  • Water resistant
  • Simultaneous temperature display
  • Sleek, lightweight design
  • Large LCD display
  • Automatic Temperature Compensation (ATC)
  • Auto-off function, data-hold function and low-battery indicator
  • Includes storage solution in a sponge embedded in a translucent cap
  • Factory Calibrated: The PH-80 meter is factory calibration to pH 7.0. The meter can easily and quickly be recalibrated with digital calibration to pH 4.0, 7.0 or 10.0 using the meter's simple one-touch process.
  • Includes a cap, batteries, storage solution and pH 7.0 buffer
  • pH Range: 0 - 14
  • Temperature Range: 1-80 °C; 33-176 °F
  • Resolution: 0.1 pH; Temperature resolution is 0.1 °C/F
  • Accuracy: +/- 0.2 pH; Temperature accuracy is +/-2%
  • Calibration: Digital automatic calibration (one point)
  • Electrode: Glass sensor and reference tube electrodes
  • Housing: Water resistant
  • Power source: 3 x 1.5V button cell batteries (model 357A; included)
  • Dimensions: 15.3 x 3.2 x 1.8 cm (6.0 x 1.3 x 0.7 inches)
  • Weight: 53.9 g (1.9 oz)

Manufacturer Info

HM Digital, Inc.
Established in 1987, HM Digital, Inc. (formerly known as Heemang Electronics) is an original equipment manufacturer (OEM) that has been recognized worldwide for providing the best values in water testing instrumentation, especially the increasingly popular TDS meter.

HM Digital PH-80 Handheld Digital pH Meter Reviews

Average Rating
(3 reviews)
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Reviewers Rating Average

Posted: 10/19/2015 from PORT SAINT LUCIE, FL UNITED ST
2.5 5
Experience Level: Expert

Comments: I have had this unit for 3 1/2 years. It always needs calibration and I have never been able to trust the readings. Tests high most of the time.

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Reviewers Rating Average

Posted: 11/12/2012 from BREMERTON, WA UNITED STATES
2.5 5
Experience Level: Intermediate

Comments: I had this product less than a month and it started giving me really high Ph readings. So I calibrated. I attempted to find the instructions online, but could not find any thing specific on this model. I attempted using the buttons, but they would only work half the time. When I started to put it in the water, it would work for like 20 seconds and then require calibration. I would calibrate it, use if for 20 seconds, and then it would require calibration again. I just gave up on it, never really knowing if it ever gave me a good value.

8 of 11 People found this review helpful, did you? Yes No

HM Digital PH Meter

Reviewers Rating Excellent!

Posted: 10/20/2011 from LATROBE, PA UNITED STATES
5.0 5
Experience Level: Intermediate

Comments: i love this meter, works perfect.

7 of 10 People found this review helpful, did you? Yes No

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