HM Digital PH-80 pH/Temperature Meter

Waterproof Meter for pH and Water Temperature

Guessing at pH or relying on color-change drops leaves too much room for error when a swing of even half a point can lock out nutrient uptake. The PH-80 reads pH and water temperature at the same time on a large LCD, with a water-resistant housing built for hydroponics, gardening, pools, spas, aquariums, and drinking water testing.

One-touch digital calibration lets you recalibrate to pH 4.0, 7.0, or 10.0 in a single step, and a storage solution reservoir built into the cap keeps the electrode ready between uses.

Key Features & Benefits

• Simultaneous pH and temperature — both readings display together on a large LCD, no separate temperature probe needed.
• One-touch digital calibration — recalibrates to pH 4.0, 7.0, or 10.0 without a multi-step manual procedure.
• Water-resistant housing — built for testing environments around reservoirs, pools, spas, and aquariums.
• Built-in storage reservoir — the cap holds a sponge with storage solution to keep the electrode from drying out.

Who Should Use This pH Meter

Hydroponic growers and hobbyists who want a waterproof, one-touch-calibration pH meter for nutrient reservoirs, pools, aquariums, or drinking water testing.

About HM Digital

HM Digital's meter lineup pairs pH and EC/TDS testers like the PH-80 with the calibration and storage solutions needed to keep them reading accurately over repeated use.

Frequently Asked Questions

What does the PH-80 measure?

It measures pH and water temperature simultaneously, displaying both on a large LCD. Reading temperature alongside pH helps you interpret results consistently across different water conditions.

How do I recalibrate it?

Use the one-touch digital calibration process to recalibrate to pH 4.0, 7.0, or 10.0 as needed. The meter ships factory calibrated to pH 7.0.

Is this meter waterproof?

It has a water-resistant housing suited to testing applications around hydroponic reservoirs, pools, spas, and aquariums. It's built to handle the wet conditions those environments create, not full submersion.

What's included with the meter?

The PH-80 ships with a cap, batteries, a built-in storage solution reservoir, and a pH 7.0 buffer for ongoing maintenance. That combination covers everything needed to start testing and keep the electrode maintained afterward.