Volume metering capillary gap device for applying a liquid sampl

Chemistry: analytical and immunological testing – Optical result – With claimed manipulation of container to effect reaction or...

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356246, 422 57, 422 58, 422102, 436166, G01N 2178, G01N 3352

Patent

active

047613815

ABSTRACT:
A method for controlling a liquid volume flowing onto a reactive surface which includes a sample application port, two systems of capillary channels, a reaction chamber, and an overflow chamber. The liquid sample to be analyzed is applied to the sample application port which gives the liquid entry to a capillary channel leading to the reaction chamber which contains a material capable of detecting the component of interest in the liquid. When the reaction chamber is filled, the remaining liquid will flow through another capillary channel to an overflow chamber. The capillary channel leading to the overflow chamber is controlled so that liquid cannot flow back into the reaction chamber.

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