A Metal-Connected Glass Electrode (Classic Reprint)

Discover how a metal-connected glass electrode changes the way we measure hydrogen ion activity.

This study explains the idea behind a direct metal-to-glass connection and how it can simplify mounting while adding protection to the glass itself. Learn about the different electrode forms, from bulb to membrane, and how coatings and wall thickness influence performance.

This work outlines the practical construction approaches, including tube- and beaker-form electrodes, the role of silvering and copper plating, and the trade-offs between containing and dipping designs. It also covers how to calibrate and interpret readings, and why certain solutions and glass compositions matter for accurate pH measurements. The author discusses everyday factors that affect results, from aging and surface leakage to the impact of salts, proteins, and oxidants or reductants. It presents comparisons with other electrode types to help you decide when a metal-connected electrode might be right for your work.

• How metal-connected glass electrodes are built and wired for measurement.
• Calibration methods and the interpretation of potential versus pH.
• How substances like gelatin, metals, and oxidants influence readings.
• Practical limits, such as useful pH range and aging effects.

Ideal for readers of scientific instrumentation, electrochemistry, and anyone exploring alternative glass electrode designs for hydrogen-ion concentration measurements.