SNS-PHM-224 PH Replacement Electrode for Pen Type Combo Meter PHM-224 TDS-240 ECM-226

Optional Replacement electrode for pen type combo meters PHM-224, TDS-240 and ECM-226 (sold separately)

- Multi-parameter electrode for use in water testing applications
- Glass bulb membrane with a built-in temperature sensor
- Enhance accuracy by replacing the electrode regularly 
- Easy to change, simply unplug the used electrode and plug in the new one