pH meter is used to measure the acidity and alkalinity of a solution by measuring Hydrogen ion concentration in a solution. pH Meter Calibration is required at regular intervals or as per the defined frequency to maintain its accuracy. Here, we will discuss the pH meter principle, ph meter electrode, Range of pH, Calibration, Key components or parts of the pH instrument, Working, precautions, Advantages, and Disadvantages. Download scientific diagram | Diagram of a pH meter from publication: pH Meter Maintenance and Repair | Lecture | Repair and Maintenance | ResearchGate, the professional network for scientists. Let us understand the working principle better by following the detailed pH meter diagram below: A typical pH meter consists of three different parts: an internal electrode, a reference electrode and a voltameter (Figure – pH meter diagram) A schematic diagram of a pH meter shows all the components and connections necessary for it to work. A pH meter measures the hydrogen ion concentration in a solution, which is a measure of its acidity.

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