Dosing device for a liquid chromatograph

Details Dosing device for a liquid chromatograph Dosing device for a liquid chromatograph

1976-12-20

1977-12-13

Ruehl, Charles A.

Measuring and testing

Measuring vessel

G01N 100

Patent

active

040622401

ABSTRACT:
A dosing device for a liquid chromatograph includes an axially movable shank. The shank is guided in packing sleeves and has a notch or cavity for receiving a sample and transferring it between a sample chamber and a high pressure chamber by axially moving the shank. The high pressure chamber is coupled to the chromatograph flow system between the pump and the column. A shutter is provided for closing the notch. In the closed position, the shutter and the shank together form a smooth common surface.

REFERENCES:
patent: 3362228 (1968-01-01), Stuben
patent: 3681996 (1972-08-01), Crist
patent: 3827303 (1974-08-01), Shiina

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