Spectrophotometer sample cell

Details Spectrophotometer sample cell Spectrophotometer sample cell

1991-03-26

1992-09-08

Evans, F. L.

Optics: measuring and testing

Sample, specimen, or standard holder or support

Fluid containers

356440, 250576, G01N 2105

Patent

active

051462834

ABSTRACT:
A spectrophotometer sample cell is described having a housing defining a frusto-conical chamber with inlet and outlet windows at each end. The inlet window is positioned toward the energy source of the spectrophotometer and the outlet window, which is the larger diameter window, is positioned toward the detector assembly of the spectrophotometer. A single outlet passage is positioned between a pair of inlet passages, the latter being toward respective ends of the chamber. The interior surface of the sample cell is provided with means for preventing a substantial portion of reflected energy impinging on the sample cell walls from reaching the detector. Such means include irregularities, annular walls, and wavelength absorbing colors. A trough is provided in the bottom of the larger end of the frusto-conical chamber for conveying condensate to the outlet passage.

REFERENCES:
patent: 3480784 (1969-11-01), Pierce
patent: 3614243 (1971-10-01), Harvey
patent: 3700338 (1972-10-01), Trundle
patent: 3887473 (1975-06-01), Sternberg et al.
patent: 4067653 (1978-01-01), Fletcher et al.
patent: 4177381 (1979-12-01), McClatchie et al.
patent: 4468124 (1984-08-01), Berick
patent: 4501968 (1985-02-01), Ebi et al.
patent: 4736103 (1988-04-01), Nelson et al.
Swope, The Review of Scientific Instruments, vol. 42, No. 10, Oct. 1971, pp. 1502-1504.

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