Photometric absorption detector

Details Photometric absorption detector Photometric absorption detector

1979-03-30

1981-07-21

Evans, F. L.

Optics: measuring and testing

By dispersed light spectroscopy

Utilizing a spectrometer

356334, G01J 342

Patent

active

042795117

ABSTRACT:
A photometric absorption detector, in particular for the use in liquid chromatography is provided, in which a test cell is penetrated by the rays emitted by a light source and in which the absorption of certain wave length ranges of the light by the sample is recorded by means of a photodetector arrangement. Means for the spectroscopical dispersion of the light emerging from the test cell are provided, and the photodetector arrangement can be displaced within the spectrum. There may be two independently displaceable photodetectors, one of which may be set to a measuring wave length, while the other one may be set to a reference wave length.

REFERENCES:
patent: 2436104 (1948-02-01), Fisher et al.
patent: 2572119 (1951-10-01), Dieke
patent: 2686894 (1954-08-01), Mathieu
patent: 3606547 (1971-09-01), Iwahashi
patent: 3786261 (1974-01-01), Tucker
patent: 4012147 (1977-03-01), Walfren
patent: 4030828 (1977-06-01), Sonobe et al.

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