Chemical apparatus and process disinfecting – deodorizing – preser – Analyzer – structured indicator – or manipulative laboratory... – Means for analyzing liquid or solid sample
Patent
1992-09-01
1994-01-18
Johnston, Jill A.
Chemical apparatus and process disinfecting, deodorizing, preser
Analyzer, structured indicator, or manipulative laboratory...
Means for analyzing liquid or solid sample
128634, 25022714, 385 12, 385 13, 422 8211, 422 8213, G01N 2117
Patent
active
052797937
ABSTRACT:
A fiber optic optical osmometer (50) includes a fiber optic probe (20) inserted into a chamber (24) including a filter member (10 ) and a diaphragm (14) responsive to a pressure change in the chamber. The filter member transmits a fluid including an analyte into the chamber. A reagent within the chamber reacts with the analyte to form a reaction product. The filter member retains the reaction product in the chamber creating a pressure change. The diaphragm is illuminated by light directed to it from the fiber optic probe. Light reflected from the diaphragm is returned via the fiber optic probe to a detector and measurement electronics. As the diaphragm responds to pressure changes in the chamber, light returned to the detector is modulated proportional to the pressure change. The pressure change may be interpreted as a measure of the concentration of the analyte in the fluid.
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Austin R. Russel
Johnston Jill A.
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