[PH300]
[PH90]
The PH90 is a 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. Complete with flat surface pH electrode, protective sensor cap, and two 3V CR-2032 button batteries.