"Version: 20251101"--Title page verso.Includes bibliographical references.1. Overview of pH sensing technologies -- 1.1. Introduction -- 1.2. The definition of pH measurement -- 1.3. Glass-based pH sensor -- 1.4. Summary2. Electrochemical pH sensors : classification of materials and their working mechanism -- 2.1. Introduction -- 2.2. Materials for electrochemical pH sensing -- 2.3. Method of p…