Extech PH90

PH90: Waterproof pH Meter

Water Quality Meter with Rugged Housing and Flat Surface Electrode

Rugged waterproof (IP57) housing with Flat Surface Electrode for measuring pH in liquids, semi-solids, and solids. Does not break or get junctions clogged like the traditional glass bulb electrodes. Easy to replace sensor is perfect for field or lab use.