Infra-red spectrophotometric apparatus

Details Infra-red spectrophotometric apparatus Infra-red spectrophotometric apparatus

1987-06-09

1989-04-25

Fields, Carolyn E.

Radiant energy

Invisible radiant energy responsive electric signalling

Infrared responsive

250351, 250353, G01N 2135

Patent

active

048250767

ABSTRACT:
An optical cell and detector assembly for a spectrophotometric analyzing apparatus which comprises a sample cell having walls of optically transparent material defining a sample cavity having closely adjacent the sample cavity a radiation detector and adjacent an opposite wall a lens whereby to focus radiation passing through the cell onto the detector. The apparatus may also comprise optical means for focussing the beam onto the sample cell, chopper means for periodically obscuring the beam, and filter means for selecting one or more wavelengths from the beam. The sample under test is an aqueous emulsion and the filters are chosen to determine the concentration of the non aqueous components of the emulsion by measuring the water displaced by the components.

REFERENCES:
patent: 3281597 (1966-10-01), Greenburg
patent: 4050823 (1977-09-01), Frankenberger
patent: 4207469 (1980-06-01), Hopkins et al.
patent: 4236075 (1980-11-01), Nexo et al.
patent: 4310763 (1982-01-01), Shields
patent: 4577970 (1986-03-01), Meserol
patent: 4678914 (1987-07-01), Melrose et al.

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