| abstract |
SUMMARY A channel cell system for detecting and / or measuring the presence of analyte particles in a sample stream, comprising a laminar flow channel (100) and an indicator stream (70) each comprising a laminar flow channel (100). ), Two inlet means (30, 20) in fluid communication with the laminar flow channel (100), and directing the stream out of the laminar flow channel (100) to form a single mixed stream. A channel cell system is disclosed, comprising: The indicator stream (70) may include an indicator substance that indicates the presence of the analyte particle by a detectable change in property upon contact with the analyte particle, and a sample stream (80). The laminar flow channel (100) has a depth that is small enough to allow laminar flow of the stream, and the analyte particles diffuse into the indicator stream (70) to allow relatively large particles in the sample stream (80). It has a length sufficient to allow it to be substantially eliminated, thereby forming a detection area. |