pH-5014 Hydrofluoric Acid Resistant Electrode pH Electrode

pH Electrode Measurement Principle：pH-5014 pH Hydrofluoric Acid Resistant Electrode Electrode 

The principle of pH electrode measurement is based on electrochemistry, specifically utilizing the concept of a galvanic cell. This cell converts chemical energy into electrical energy. The electromotive force (EMF) of the cell is derived from two half-cells: the measuring half-cell, whose potential is linked to the specific ion activity, and a reference half-cell, commonly known as the reference electrode, which is in contact with the measured solution and connected to the measuring instrument. The potential difference generated within the electrode due to the cell reaction is transmitted to a pH controller, where algorithms convert it into a displayed pH value.

Electrode Slope:

Theoretically, at 25°C, the slope for a glass electrode is 59.16 mV per pH unit. However, in practice, not all glass electrodes achieve this exact slope, typically operating at around 95% of the theoretical value. Temperature also affects the mV change per pH unit.

pH Electrode Specifications: pH-5014 HF Resistant Electrode 

Temperature Compensation Formula:

△E=59.16[（273+T）/298]△pH

Usage and Maintenance:

1. Special Cable: Do not cut or modify the shielded lead wires; any damage voids responsibility.

2. Avoid Specific Solutions: Prevent prolonged immersion in distilled water or protein solutions and exposure to silicone oils.

3. Cleaning: If the glass membrane becomes transparent or has deposits, clean with dilute acid and rinse thoroughly.

4. Replacement: If regular maintenance fails to restore function, replace the electrode.

5. Waterproofing: Avoid water contact with the electrode cable. 

This pH-5014 electrode, with its specialized glass membrane, is ideally suited for harsh environments involving hydrogen fluoride, ensuring accurate measurements crucial for industries where precision in pH control is paramount.

Correspondence between pH and mV

Correspondence between pH and mV at 25°C

pH/ORP Electrode Ensemble Operating Instructions

pH-ORP-Electrode-Ensemble-Operating-Instructions.pdf