Chemical apparatus and process disinfecting – deodorizing – preser – Analyzer – structured indicator – or manipulative laboratory... – Means for analyzing liquid or solid sample
Patent
1992-10-14
1994-07-19
Johnston, Jill A.
Chemical apparatus and process disinfecting, deodorizing, preser
Analyzer, structured indicator, or manipulative laboratory...
Means for analyzing liquid or solid sample
128634, 385 13, 427 212, 427 213, 422 8206, 422 8208, 436 68, 436166, G01N 2164
Patent
active
053307186
ABSTRACT:
A sensor element includes an analyte-permeable matrix which supports and maintains an emulsion of a sensing solution containing an analyte-sensitive indicator substance in a plurality of tiny vesicles. The sensing solution is immiscible with the matrix material, and contains a dye indicator which dissociates into two different species. The sensing solution is initially mixed with an agent which modifies the equilibrium of dissociation of the dye indicator for optimal sensitivity. The liquid matrix preferably includes a curing inhibitor to allow the matrix to remain liquid until applied to a sensing surface, such as the tip of an optical fiber. The sensing solution remains suspended in these homogeneously dispersed vesicles after the matrix solidifies.
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G. G. Vurek; Fiber-Optic Carbon Dioxide Partial Pressure Sensor; Mar. 1983; PB83-189738.
Bankert Charles S.
Hui Henry K.
Johnston Jill A.
Puritan-Bennett Corporation
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