Apparatus and method for spontaneous meniscus generation

Fluid handling – Diverse fluid containing pressure systems – Gas pressure storage over or displacement of liquid

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251125, 222420, 604251, A61M 514

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active

043877346

ABSTRACT:
An apparatus and method are described for converting a continuous fluid stream into a succession of discrete fluid segments or boluses traveling independently of each other in a capillary passage, the menisci of the boluses so generated providing a clear basis for observing, accurately measuring, and controlling fluid flow. The meniscus generator is surrounded by a second fluid immiscible with the first fluid, and the wall of the capillary passage is provided with a longitudinal slit for reducing the effect of surface tension, for the spontaneous formation of boluses of the first fluid, for eliminating the effect of differential pressure on the boluses, and for maintaining separation of the boluses.

REFERENCES:
patent: 1269666 (1918-06-01), Wheeler
patent: 2232029 (1941-02-01), Juchli
patent: 3826137 (1974-07-01), Claski

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