| 摘要 |
<p>A multiple electric conductivity measuring apparatus comprising at least two electric conductivity measuring cells each having at least two electrodes brought into contact with a substance to be measured, wherein the electric conductivity measuring cells are so connected electrically that the sensing signals therefrom can be added and/or subtracted. The measuring apparatus can measure a micro difference or variation of the electric conductivity at a plurality of measuring points different in position or time with high reliability, accuracy and sensitivity.</p> |
