potentiometer

https://doi.org/10.1351/goldbook.P04789
  1. In electronics, a sensitive voltage measuring device based on a null technique which provides infinite @I02988@ at null.
  2. In chemistry, potentiometric methods involve the measurement with a potentiometer of voltage generated in a cell. A high @I02988@ digital voltmeter is often used today as a convenient alternative to a potentiometer.
Source:
PAC, 1990, 62, 2167.(Glossary of atmospheric chemistry terms (Recommendations 1990)) on page 2207 [Terms] [Paper]