Description
The Hanna HI98107 pHep pH Tester is a waterproof, pocket-sized pH meter built for quick and reliable water quality checks. It displays pH and temperature simultaneously on a large, easy-to-read LCD, with a resolution of 0.1 pH and an accuracy of about ±0.2 pH across a 0.0 to 14.0 pH range.
This tester offers automatic two-point calibration using standard buffer solutions (pH 4.01, 7.01, and 10.01), along with automatic temperature compensation for consistent results. Its cloth-junction electrode provides a larger sensing surface than typical ceramic junctions, making it well suited for drinking water, aquariums, pools, and ponds.
Simple two-button operation keeps things easy: one button for power, the other for calibration. Extra conveniences include a battery-level indicator at startup, an on-screen stability indicator, and a selectable automatic shut-off after 8 or 60 minutes to help save battery life.
The HI98107 ships with a CR2032 battery, calibration buffer sachets, an electrode cleaning solution sachet, a protective storage sleeve, an instruction manual, and a quality certificate, backed by a 1-year warranty.
Why Choose the HI98107 pHep pH Tester
When it comes to fast, dependable readings, the HI98107 pHep pH Tester stands out as a trusted choice for home and professional use alike. Its slim, ergonomic body is only 17 mm thick, so it slips easily into a pocket, tackle box, or tool bag. Whether you are dosing a hydroponic system, checking a swimming pool, or keeping tabs on an aquarium, the HI98107 pHep pH Tester delivers the accuracy you need without a steep learning curve.
HI98107 pHep pH Tester Key Specifications
The HI98107 pHep pH Tester measures pH from 0.0 to 14.0 with a resolution of 0.1 pH and an accuracy of ±0.2 pH at 25°C. Temperature is measured from 0.0 to 50.0°C with a resolution of 0.1°C and an accuracy of ±0.5°C, and readings can be displayed in Celsius or Fahrenheit. The unit runs on a single CR2032 3V battery, rated for roughly 1000 hours of continuous use, and measures 160 x 40 x 17 mm while weighing just 75 g.
Calibrating the HI98107 pHep pH Tester
Calibration is handled with a dedicated button, so there is no need for complicated menus. Once calibration mode is active, the HI98107 pHep pH Tester recognizes standard buffer solutions of pH 4.01, 7.01, or 10.01 and automatically accepts and stores the reading once the value stabilizes. A clock-style stability icon on the LCD lets you know exactly when a measurement is settled and ready to record.
What’s Included and Warranty
Every HI98107 pHep pH Tester ships with a CR2032 battery already installed, an electrode cleaning solution sachet, pH 4.01 and 7.01 buffer solution sachets, a protective storage sleeve, an instruction manual, and a quality certificate. The tester is backed by a 1-year manufacturer warranty, giving you peace of mind for years of routine water testing.
Pair It With a TDS Tester
For a more complete picture of your water quality, consider pairing this pH meter with our Hanna HI98301 DiST 1 Waterproof TDS Tester, which measures total dissolved solids alongside your pH readings. To learn more about why pH matters for water quality in general, the USGS Water Science School offers a helpful independent overview of the topic.
Overall, the HI98107 pHep pH Tester is a compact, reliable, and easy-to-calibrate instrument that suits drinking water, aquariums, pools, ponds, and hydroponics alike, making it a smart addition to any water quality toolkit. If you run a farm, a swimming pool service, or simply want to keep your home aquarium healthy, the HI98107 pHep pH Tester makes it simple to log accurate readings in seconds, so you can react quickly to any change in water chemistry. With proper care, cleaning the electrode after each use and storing it in the moistened protective sleeve, your HI98107 pHep pH Tester will continue to deliver accurate, repeatable results for years of regular testing.

