Extech 6012WS  

Extech 6012WS: Waterproof pH Electrode for Palm pH

Palm pH Meter stick type electrode with 4-wire waterproof connector

The 6012WS is a waterproof stick type pH electrode. For use with the Extech Model PH220-S. Featuring a 0 to 14 pH range, 0 to 80°C operating temperature, and automatic temperature compensation via built-in Pt-100-Ohm sensor.