ph electrode

About ph electrode

A pH electrode is a sensor used to measure the hydrogen ion activity in solutions, which is expressed as pH (a measure of acidity or alkalinity). pH electrodes are commonly used in laboratories, industry, and environmental testing to monitor pH in various substances, such as water, food, chemicals, and biological samples.

Key Components and How it Works:

1. Glass Bulb: The sensing part of most pH electrodes is a special glass bulb, sensitive to hydrogen ions in the solution. When the electrode is immersed in a solution, hydrogen ions interact with the glass, generating an electric potential.
2. Reference Electrode: pH electrodes often have a reference electrode inside, which provides a stable comparison voltage. It is typically filled with a potassium chloride solution, ensuring stability and accuracy.