TWO-BEAM ANALYSIS SYSTEM FOR LIQUID CHROMATOGRAPHY Russian patent published in 1997 - IPC

FIELD: examination and analysis of substances. SUBSTANCE: two-beam analysis system has radiation sources, collimator, light beam splitter, mirror positioned at distance A from the latter, two parallel cells with equal beam diameter and with through holes, facilities which feed liquid to internal space of every through hole, and two photoreceivers. Cells are positioned with shift D relative to each other in direction of beam travel and optical axis. Inlet of one of through holes is located at distance B from mirror, and inlet of other through hole is located at distance C from light beam splitter. Shift D and distances A, B, C are correlation by equation D=A and C=B+A. EFFECT: higher result of analysis. 1 dwg