MEASURING APPARATUS FOR LIQUID SAMPLE

PURPOSE:To provide a highly sensitive and high stable flow cell sensor for liquid chromatograph. CONSTITUTION:In a flow cell part having a reference hole 11 in the vicinity of a sample flow hole 10, wall surfaces in the holes of the sample flow hole 10 and the reference hole 11 are optically polishe...

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Bibliographische Detailangaben
Hauptverfasser:	AKITOMO NOBUO, MATSUURA SHUNICHI
Format:	Patent
Sprache:	eng
Schlagworte:	INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES MEASURING PHYSICS TESTING
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Beschreibung
Zusammenfassung:	PURPOSE:To provide a highly sensitive and high stable flow cell sensor for liquid chromatograph. CONSTITUTION:In a flow cell part having a reference hole 11 in the vicinity of a sample flow hole 10, wall surfaces in the holes of the sample flow hole 10 and the reference hole 11 are optically polished and cross section diameters of the holes are made equal. A sample light sensor 7 and a reference light sensor 8 for detecting light are placed behind the sample through hole 10 and the reference hole 11, respectively. Response speed of the reference light sensor system circuit is slower than that of the sample light sensor system. Therefore a liquid chromatograph flow cell sensor system which is stable for a long time, without loss in detected light with electric noise reduced is obtained.