Replacement flat surface electrode for ExStik.
Features- Easy to clean, rugged flat surface Refillable pH electrode.
- Interchangeable with ExStik® Chlorine or ORP meters.
- Provides an economical way to refill your electrode.
- Eliminates the problem of limited electrode shelf life, contamination, and usage life.
- Complete with protective connector cap.
- ATC via built-in Pt-100Ohm sensor.