One of the obstacles to the extension of particular micro-analytical methods in chemistry lies in the lack of suitable measurement detectors. To overcome this problem, a new miniature detector for the detection and identification of fluids in a capillary tube is developed, which should improve certain methods of analysis.
Bozicevic, J., Everaerts, F. M., Pavelic, P., & Verhaggen, T. P. E. M. (1971). High-frequency fluid-conductivity measurement in microanalytical systems. Electronics Letters, 7(23), 688-689. https://doi.org/10.1049/el:19710470