Multiple internal reflectance liquid sampling

Details Multiple internal reflectance liquid sampling Multiple internal reflectance liquid sampling

1992-05-27

1993-06-15

Evans, F. L.

Optics: measuring and testing

Sample, specimen, or standard holder or support

Fluid containers

356244, 356300, G01N 2101

Patent

active

052204014

ABSTRACT:
A liquid cell for IRS comprising a rod-shaped crystal having a cylindrical sampling surface and integral conical end portions forming end entrance and exit faces for a radiation beam. The center of the end faces are masked. All radiation entering the entrance face internally reflects from the conical surface and propagates down the IRE by multiple internal reflections from the cylindrical sampling surface. The IRE can be sealed into a trough or flow-through housing for the liquid sample. The seals are at insensitive regions of the IRE.

REFERENCES:
patent: 3370502 (1968-02-01), Wilks, Jr.
patent: 4988195 (1991-01-01), Doyle
Doyle, Applied Spectroscopy, vol. 44, No. 1, Jan. 1990, pp. 50-59.

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