Development of Glassless All-solid-state pH Sensor

摘要

Glass electrode pH meters are the de-facto standard for measuring pH and Yokogawa offers pH meters of this type, which are widely used by many customers in various industries including chemicals, water and sewerage, petrochemicals, and biotechnology. However, glass electrode pH meters involve inherent risks: glass is fragile and the internal liquid may leak and contaminate samples. Therefore, we have been working with Waseda University to develop a next-generation all-solid-state pH sensor. This paper describes the key technologies and reports the characteristics of a prototype.