G - Physics – 01 – N
Patent
G - Physics
01
N
73/114
G01N 1/10 (2006.01) G01N 21/05 (2006.01) G01N 30/74 (2006.01)
Patent
CA 1047276
CONVERGENT LIGHT ILLUMINATED FLOW CELL FOR LIQUID CHROMATOGRAPHY Abstract of the Disclosure Single and dual beam flow cells for liquid chromato- graphy that provide good detectability and linear response with small sample volumes. A cylindrical window surrounds the sample flow path to permit focusing covergent light rays through the center of the flow path and along optical paths of equal length through the cell. Optical stops limit the light passing through the cell to convergent rays incident to the window surface. A wide acceptance angle for the rays results in high light transmission and averages variations in light output along the light source. A dual beam flow cell utilizes a common exit for the sample and reference liquids. The flow cells are economically constructed for direct coupling to a chromatographic column by using a standard compression fitting union and can be used in a single wavelength or discrete wavelength detector, or in a spectrophotometer.
231834
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