Sensitive measuring cell for a differential refractometer of the

Details Sensitive measuring cell for a differential refractometer of the Sensitive measuring cell for a differential refractometer of the

1979-04-12

1980-10-21

Corbin, John K.

Optics: measuring and testing

Sample, specimen, or standard holder or support

Fluid containers

356130, 356361, G01N 110

Patent

active

042291054

ABSTRACT:
A highly sensitive measuring cell for a differential refractometer of the interference type for chemical analyzers comprises two channels in a measuring body, one of said channels conveying a medium whose refractive index is to be measured and the other channel conveying a reference medium of known refractive index. The respective path lengths of the measuring channel and the reference channel are mechanically adjustable to exactly the same lengths in order that a maximum common mode rejection ratio (hereafter "CMRR") value may be achieved.

REFERENCES:
patent: 2964992 (1960-12-01), Hordle
patent: 3680963 (1972-08-01), Edwards et al.

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