In 1980 Hanna was the world's first manufacturer to introduce the four-ring or potentiometric method of conductivity measurement with portable & bench meters. The range has been since extended to include waterproof meters measuring TDS as well as conductivity for outdoor or industrial applications. Several bench meters have been designed and developed for labs. Add to these the new printing & logging GLP meters, all with the superior four-ring technology and you have a wide spectrum of conductivity and TDS meters for about every application.
In 1980 Hanna was the world's first manufacturer to introduce the four-ring or potentiometric method of conductivity measurement with portable & bench meters. The range has been since extended to include waterproof meters measuring TDS as well as conductivity for outdoor or industrial applications. Several bench meters have been designed and developed for labs. Add to these the new printing & logging GLP meters, all with the superior four-ring technology and you have a wide spectrum of conductivity and TDS meters for about every application.
