Sample cell for use in the optical analysis of liquids

Details Sample cell for use in the optical analysis of liquids Sample cell for use in the optical analysis of liquids

1976-03-26

1978-02-21

McGraw, Vincent P.

Optics: measuring and testing

Sample, specimen, or standard holder or support

Fluid containers

356181, 250576, G01N 110

Patent

active

040749401

ABSTRACT:
A sample cell for use in spectrophotometry has a center-fed horizontal sample bore and exit ducts of reduced cross-sectional area leading away from the ends of the sample bore. In the disclosure, the cross-sectional area of the exit ducts increases downstream of the sample bore and the two exit ducts are joined by a horizontal bore parallel to the sample bore. The hydrostatic head of pressure downstream of the sample bore is minimized by arranging the outlet from the cell well below the inlet. The disclosed cell has low cross-contamination and drift figures, and is substantially immune from trapping of entrained bubbles even when used for discrete sampling.

REFERENCES:
patent: 2691737 (1954-10-01), Holby
patent: 3614452 (1971-10-01), Felton
patent: 3926526 (1975-12-01), Weiss

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