WLR Industries Hanna HI98107 pH Tester - Pocket Waterproof Handheld Meter, 0.1‑Resolution pH & Temp

The Hanna HI98107 is a compact, waterproof handheld pH meter that delivers fast 0.1‑resolution pH readings with built‑in temperature compensation and easy one‑button calibration.

Designed for hobbyists and professionals alike, this pocket‑size tester shows pH and temperature at once on a multi‑level LCD and fits easily into a kit, tackle box, or poolside bag. It combines a user‑friendly interface with a rugged, field‑ready build — ideal for monitoring freshwater and treated water in aquariums, pools, ponds, and drinking water samples. The meter’s electrode employs a cloth junction reference cell to improve flow and longevity, while selectable setup options help conserve battery life between uses.

How quickly and accurately will it report pH and temperature?

The HI98107 displays pH to 0.1 resolution and provides an accuracy of approximately ±0.1 pH under normal conditions, while temperature is measured with an exposed sensor for fast automatic compensation. Both values appear simultaneously so you can confirm sample conditions at a glance.

• pH range: 0.0–14.0 with 0.1 pH steps
• Accuracy around ±0.1 pH (typical)
• Exposed temperature sensor for rapid automatic compensation
• Screen shows stability and calibration indicators for reliable readings

What makes calibration and maintenance simple?

Calibration is driven by a dedicated button and the meter recognizes standard buffers automatically, accepting values once stable. You can calibrate in one or two points using pH 4.01, 7.01, and 10.01 standards, and the instrument stores the last calibration for convenience between sessions.

• One‑button access to calibration mode
• Auto‑accepts standard buffer values when readings stabilize
• Supports single‑ or two‑point calibration routines
• Electrode with cloth junction for improved flow and reduced clogging

Can it handle field use and different user preferences?

The HI98107 is built for portable use and includes setup choices to match your workflow. Automatic shutoff can be set to conserve battery — 8 minutes, 60 minutes, or disabled — and temperature display toggles between °C and °F to suit regional preference.

• Waterproof handheld design for on‑site testing
• Battery level shown at startup to avoid surprises in the field
• Auto‑off timing options accessible via battery compartment setup button
• Temperature units switchable between Celsius and Fahrenheit

How does the electrode design improve performance?

The HI98107 uses a reference cell with a cloth junction that offers a larger wettable area than standard ceramic junctions, promoting steady ion exchange in low‑flow or particulate water types. This design helps maintain stable response and reduces the frequency of performance‑related maintenance.

• Cloth junction reference cell for better flow and contact
• Improved stability in varied water conditions like ponds or treated pools
• Field‑replaceable electrode compatible with the meter’s calibration routine

Who is this for: The Hanna HI98107 from WLR Industries is ideal for aquarium keepers, pond caretakers, pool technicians, and anyone who needs a reliable, portable pH check for drinking or process water. Its combination of fast temperature‑compensated readings, simple calibration, and rugged portable design makes it suitable for hobbyists, maintenance crews, and small lab or field teams who require dependable water quality data without bulky bench instruments.