pH-sensitive chromophoric reagents immobilized in porous optical fibers. Optoelectronic instrumentation system measures acidity or alkalinity of aqueous nutrient solution. Includes one or more optrodes, which are optical-fiber chemical sensors, in sense, analogous to electrodes but not subject to some of spurious effects distorting readings taken by pH electrodes. Concept of optrodes also described in "Ethylene-Vapor Optrodes" (KSC-11579). pH optrode sensor head, with lead-in and lead-out optical fibers, convenient for monitoring solutions located away from supporting electronic equipment.
pH Optrode Instrumentation
NASA Tech Briefs ; 19 , 6
1995-06-01
Sonstige
Keine Angabe
Englisch
A fiber-optic micro-optrode for dissolved oxygen measurements
British Library Conference Proceedings | 1997
|Online Contents | 2001
Online Contents | 1998
British Library Conference Proceedings | 1989
|NTIS | 1953