The waterproof Extech PH100 pH meter has a flat surface electrode for measuring pH in liquids, semi‑solids, and solids. Built‑in smart chip offers advanced functions not found on other handheld pH meters. RENEW indicator eliminates guesswork, telling when to replace the pH electrode. CAL feature indicates when recalibration is needed.

Large digital display shows pH and temperature simultaneously, with analog bar graph indicating pH trends from neutral (pH 7.00). Automatic temperature compensation, data hold, auto power off, low battery indication, and display stabilization indicator. Measures pH 0.00–14.00 with 0.01pH resolution and accuracy. Temperature measurement 23–194°F (-5–90°C) with ±1.8°F accuracy. Completely waterproof (IP57) and rugged for harsh environments.

Includes flat surface pH electrode, protective sensor cap, sample cups with caps, four 3V CR2032 button batteries, and neck strap.