Chemistry: analytical and immunological testing – Including titration or ph determination
Patent
1991-10-03
1997-07-22
Edwards, Laura
Chemistry: analytical and immunological testing
Including titration or ph determination
436172, 436800, 422 55, 422 57, 422 681, 356436, G01N 2100
Patent
active
056503318
ABSTRACT:
An apparatus and method for determining acid concentrations in solutions having acid concentrations of from about 0.1 Molar to about 16 Molar is disclosed. The apparatus includes a chamber for interrogation of the sample solution, a fiber optic light source for passing light transversely through the chamber, a fiber optic collector for receiving the collimated light after transmission through the chamber, a coating of an acid resistant polymeric composition upon at least one fiber end or lens, the polymeric composition in contact with the sample solution within the chamber and having a detectable response to acid concentrations within the range of from about 0.1 Molar to about 16 Molar, a measurer for the response of the polymeric composition in contact with the sample solution, and, a comparer of the measured response to predetermined standards whereby the acid molarity of the sample solution within the chamber can be determined. Preferably, a first lens is attached to the end of the fiber optic light source, the first lens adapted to collimate light from the fiber optic light source, and a second lens is attached to the end of the fiber optic collector for focusing the collimated light after transmission through the chamber.
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Carey W. Patrick
Jorgensen Betty S.
Nekimken Howard L.
O'Rourke Patrick E.
Cottrell Bruce H.
Edwards Laura
Eklund William
Moser William R.
The United States of America as represented by the United States
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