High-pressure sample injection for liquid chromatography

Fluent material handling – with receiver or receiver coacting mea – Filling means with receiver or receiver coacting means – Interlocked discharge means – support and/or coupling

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Details

73422GC, 734256, 141386, G01N 100, B65B 3706

Patent

active

039851664

ABSTRACT:
In a liquid chromatography apparatus, a stream of fluid flows at uninterruptedly high-pressure through a valve structure into a chromatographic column. The valve structure comprises an entrance port and a check valve through which a quantity of sample fluid can be introduced into the high-pressure carrier fluid stream. The entrance port of the valve structure is configured to mate in leak-tight sample fluid communication with an exit port on a high-pressure sample fluid delivery device. In a preferred embodiment, the high-pressure sample fluid delivery device is configured as a hand-gun, with a piston disposed in the barrel thereof to eject a quantity of sample fluid from the muzzle thereof. In this embodiment, the barrel of the gun is received within the entrance port of the valve structure so as to form a high-pressure seal.

REFERENCES:
patent: 2991647 (1961-07-01), Harris
patent: 3321977 (1967-05-01), Topham
patent: 3566697 (1971-03-01), Vannus
patent: 3566698 (1971-03-01), Sheppard
patent: 3583230 (1971-06-01), Patterson
patent: 3656351 (1972-04-01), Raczak

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