Method for a liquid chemical concentration analysis system

Details Method for a liquid chemical concentration analysis system Method for a liquid chemical concentration analysis system

2007-09-11

2007-09-11

Pham, Hoa Q. (Department: 2886)

Optics: measuring and testing

Refraction testing

C356S136000, C356S445000

Reexamination Certificate

active

11491110

ABSTRACT:
An apparatus utilizes optical reflectivity (REF) to measure concentrations in liquids. The REF optical system is packaged in a compact and cost-effective form factor. An electronic circuit drives the optical system. The miniaturized REF sensor is situated in an optical-fluidic cell or an optical-fluidic manifold with an optical window in contact with the liquid. Changes in a total internal reflection (TIR) signal are sensitive to temperature and concentration of the liquid. These changes in the TIR signal are used to accurately determine the concentration in the liquid. The liquids may be either static or dynamic.

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