Extech 6015WC  

Extech 6015WC: Waterproof pH Electrode for Palm pH

Palm pH Meter electrode with 4-wire waterproof connector and 39" (1m) cable

The 6015WC is a Waterproof pH Electrode with cable. For use with the Extech Model PH220-C Waterproof Palm pH Meter. Comes with a 6 month warranty. Features an automatic temperature compensation via built-in Pt-100-Ohm sensor.