Patent ID: 7157047

Claim:
A device comprising: a transparent tubular member having a liquid inlet/outlet and an opening; a base member contained through the opening and disposed in the transparent tubular member; a plurality of detection substances fixed to the base member wherein each detection substance comprises a predetermined chemical structure and is fixed to the base member at a predetermined fixed position; a source of a liquid comprising at least one target substance; a light shielding box wherein the transparent tubular member is disposed in the light shielding box; a means connected to the transparent tubular member at the opening for drawing liquid into the transparent tubular member from the source, and discharging the liquid from the transparent tubular member via the inlet/outlet; and a means positioned outside of the transparent tubular member for identifying the target substance after the target substance has reacted with a corresponding one of the detection substances fixed to the base member, the identifying means comprising: a means for receiving emissions propagating through the wall of the transparent tubular member and from the predetermined fixed positions.