Optics: measuring and testing – Sample – specimen – or standard holder or support – Fluid containers
Patent
1994-01-03
1995-05-16
Rosenberger, Richard A.
Optics: measuring and testing
Sample, specimen, or standard holder or support
Fluid containers
356440, G01N 2105
Patent
active
054165768
ABSTRACT:
A spectroscopic detector cell which is particularly suited to the analysis of low flowrate and small volume liquid samples in micro-flow injection analysis or titration and microbore, high pressure liquid chromatography, wherein interference from bubbles in the flow path of the light passing through the cell is substantially eliminated by using a serpentine coil of small-bore, transparent(to the light employed for a given analysis), overlapping tubing for carrying the liquid to be analyzed at a high enough velocity to sweep away any otherwise interfering bubbles that might be formed in the liquid, and by immersing the coil in a second fluid (a gas or a liquid) which possesses the same refractive index as the tubing material and which also is transparent to the light employed for a given analysis.
REFERENCES:
patent: 3679312 (1972-07-01), Mansberg
patent: 3999861 (1976-12-01), Bellinger
patent: 4222670 (1980-09-01), Koshushi
patent: 4841151 (1989-06-01), Shope
Westlake, III Theodore N.
Wolcott Duane K.
Rosenberger Richard A.
The Dow Chemical Company
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