Method and equipment for volumetrically controlled and reproduci

Details Method and equipment for volumetrically controlled and reproduci Method and equipment for volumetrically controlled and reproduci

1981-09-23

1983-09-20

Adee, John

Gas separation

Means within gas stream for conducting concentrate to collector

55197, 55386, B01D 1508

Patent

active

044053444

ABSTRACT:
A method and apparatus for controllably and reproducibly introducing small amounts of a liquid sample into chromatographic systems, especially high resolution gas chromatographic systems and thin-layer chromatographic systems, order to obtain sampling extremely reduced in volume and presenting maximum reliability and reproducibility, uses a sample container having a pipette-like or nozzle-like outlet neck of very small diameter. The liquid placed in the container is submitted to at least one pressure pulse which is controlled in time and/or amplitude in order to determine emission of a corresponding and controlled quantity of liquid from the outlet neck. The pressure pulse can be a pneumatic pulse directly applied to the liquid sample in the container, or a mechanical pulse applied to the liquid sample through a device acting by magnetostriction or by a piezoelectric system.

REFERENCES:
patent: 3366149 (1968-01-01), Taft et al.
patent: 4035168 (1977-07-01), Jennings

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