Flow-through cells for spectroscopy

Details Flow-through cells for spectroscopy Flow-through cells for spectroscopy

1987-12-16

1989-04-18

McGraw, Vincent P.

Optics: measuring and testing

Sample, specimen, or standard holder or support

Fluid containers

356244, 250343, G01N 2105

Patent

active

048221660

ABSTRACT:
A flow-through cell for spectroscopy has very small dead-volume and is designed for minimal mixing. Windows at each end of the optical cell formed in a massive block are swept by the true flow, with outlets and inlets into the cell being tortuous and having at least a part parallel to and defined by the window. The windows may be held in the block by angular screw means engaged in blocks which are of a different material from that of the rings. The body of the optical cavity is between 0.4 mm and 6 mm in diameter and has a length between 1 cm and 15 cm to be traversed by an analyzing beam. The operating range is typically from between 20.degree. and 270.degree. C. and over a pressure range of from between vacuum and 2000 PSIG.

REFERENCES:
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patent: 4374620 (1983-02-01), Berick et al.
patent: 4440013 (1984-04-01), Adams
Waggener et al., "Reliable Optical Window for Cells Subjected to Widely Cycling Temperatures & Pressures", Rev. of Sci. Inst. vol. 30 #8, Aug. 1959, pp. 677-679.

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