Electricity: measuring and testing – Impedance – admittance or other quantities representative of... – Lumped type parameters
Patent
1992-01-24
1993-06-08
Harvey, Jack B.
Electricity: measuring and testing
Impedance, admittance or other quantities representative of...
Lumped type parameters
324710, 324692, 324444, 422 8202, G01R 2722, G01N 2706
Patent
active
052183122
ABSTRACT:
A method and apparatus for performing an enzyme-linked immuno sorbent assay of a biological substance in a fluid substrate wherein an enzyme conjugate is used to react with the biological substance to cause the release of ions into the substrate. The change in the resistivity of the substrate due to the release of ions is measured, and an analog signal is generated in response thereto. The analog signal is converted into a digital signal, which is quantized and output in a human readable form for indicating the quantity of the biological substance present in the substrate.
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