PHOTOACOUSTIC FLOW CELL FOR IDENTIFICATION OF RARE ANALYTES IN SUSPENSION

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A photoacoustic flow cell, the components of which may be made well in advance of conducting photoacoustic analysis, comprising (a) a chamber structure that defines a chamber, a chamber inlet, and a chamber outlet, and (b) a glass test structure, at least a portion of which is supported by the chamber structure and at least a portion of which is located in the chamber, wherein the test structure comprises an interior surface that defines a test passageway through which samples will be flowed when conducting the photoacoustic analysis.