Fast, accurate, and easy to use. The HI-98107 pHep measures both pH and temperature simultaneously on a dual-display LCD screen. Pocket-sized and fully waterproof — it even floats — making it a reliable tool for any growing setup, from soil to hydroponics.

The self-renewing cloth junction extends the lifespan of the probe: simply pull to expose a fresh piece when readings become unreliable. Calibration is straightforward with the CAL button, prompting for 7.01 and 4.01 buffer solutions in sequence.

Powered by a lithium-ion battery with up to 1,000 hours of continuous use. Operates between 0–50°C.

Recommended pH ranges:

Soil: 6.0–6.8 | Hydroponics: 5.5–6.5

Specs:

Model: HI-98107 pHep | Measurements: pH + Temperature | Display: Dual LCD | Waterproof: Yes | Battery life: 1,000h | Operating temp: 0–50°C