Apparatus and method for sensing a substance on a liquid surface

Details Apparatus and method for sensing a substance on a liquid surface Apparatus and method for sensing a substance on a liquid surface

1979-03-21

1980-09-23

Goldberg, Gerald

Measuring and testing

Liquid analysis or analysis of the suspension of solids in a...

Content or effect of a constituent of a liquid mixture

G01N 2518, G01N 3318

Patent

active

042235529

ABSTRACT:
A sensing element is embedded in an absorbant material having a substantial affinity for the substance to be sensed and a relatively low affinity for the liquid. A measurable quantity of the substance is concentrated in proximity to the sensing element and accurately positioning the sensing element in the material the thickness of the substance on the liquid surface is determinable.

REFERENCES:
patent: 3576472 (1971-04-01), Marshall
patent: 3712116 (1973-01-01), Andre
patent: 3720797 (1973-03-01), Gunn et al.
patent: 4058802 (1977-11-01), Meyers
patent: 4116045 (1978-09-01), Potter
patent: 4131773 (1978-12-01), Maham et al.

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