Patent ID: 9470681
Filing Date: 2016-10-18
CPC Classification: G01N

Claim Text:
1. An apparatus for determining whether a substance is carried in a fluid, the apparatus comprising: a fluid conduit defining a fluid inlet and a fluid outlet, the fluid conduit configured to direct flow of the fluid through the fluid conduit between the fluid inlet and the fluid outlet; and at least one removable element having at least one capture surface removably positioned in the fluid conduit and configured to contact the fluid as the fluid flows through the fluid conduit between the fluid inlet and the fluid outlet, the at least one capture surface coated with a plurality of capture molecules, having respective binding affinities with the substance, to capture the substance from the fluid; wherein the apparatus defines at least one fluid guiding surface in the fluid conduit, the at least one fluid guiding surface opposite, and spaced apart by a predetermined distance from, a respective one of the at least one capture surface to guide flow of the fluid and the substance over the plurality of capture molecules on the respective one of the at least one capture surface in a gap between the at least one fluid guiding surface and the respective one of the at least one capture surface as the fluid flows through the fluid conduit between the fluid inlet and the fluid outlet.