A solution specific conductivity meter and method for use

Year	Description
1990	Invention patented by Yasukazu Iwamoto on October 25th, 1990. Abstract: A conductivity meter usable in solutions where the path of the electric lines of force between two electrodes is altered. In one embodiment, detachable guard rings alter the path length based upon their own conductivity. In another embodiment, the physical distance between the electrodes is altered while maintaining a constant electrode configuration.
Source: selected by the editor from original sources.

Invention: A solution specific conductivity meter and method for use