![SOLVED: In a classical combined pH meter, the reference electrode is separated from the external solution by a junction through which the electrolyte leaks (left figure). The electrolyte must be periodically refilled SOLVED: In a classical combined pH meter, the reference electrode is separated from the external solution by a junction through which the electrolyte leaks (left figure). The electrolyte must be periodically refilled](https://cdn.numerade.com/ask_images/5c148b58cf3b423eac08a5a63b03b2dd.jpg)
SOLVED: In a classical combined pH meter, the reference electrode is separated from the external solution by a junction through which the electrolyte leaks (left figure). The electrolyte must be periodically refilled
![pH Electrode with Storage Solution – Vinmetrica – Sulfite (SO2), Malic, Alcohol & pH/TA tests for Wine, Beer & Kombucha. pH Electrode with Storage Solution – Vinmetrica – Sulfite (SO2), Malic, Alcohol & pH/TA tests for Wine, Beer & Kombucha.](https://vinmetrica.com/wp-content/uploads/2015/03/DSC1506-scaled.jpg)
pH Electrode with Storage Solution – Vinmetrica – Sulfite (SO2), Malic, Alcohol & pH/TA tests for Wine, Beer & Kombucha.
![pH Buffer Calibration Solution 3-Pack: pH 4.00 Buffer, pH 7.00 Buffer, and Electrode Storage Solution — 250 mL (8.4 fl oz) Each — NIST Traceable Reference Standards for All pH Meters: Amazon.com: Industrial & Scientific pH Buffer Calibration Solution 3-Pack: pH 4.00 Buffer, pH 7.00 Buffer, and Electrode Storage Solution — 250 mL (8.4 fl oz) Each — NIST Traceable Reference Standards for All pH Meters: Amazon.com: Industrial & Scientific](https://m.media-amazon.com/images/I/71QPru9ZomL.jpg)