Automatic sample injector and disposable sample cassette

Details Automatic sample injector and disposable sample cassette Automatic sample injector and disposable sample cassette

1985-10-24

1987-12-08

Richman, Barry S.

Chemical apparatus and process disinfecting, deodorizing, preser

Analyzer, structured indicator, or manipulative laboratory...

Sample mechanical transport means in or for automated...

55386, 73 611C, 422 70, 436161, G01N 3108

Patent

active

047117648

ABSTRACT:
An automatic sample injector for high pressure liquid chromatography, utilizing a cassette-like holder of a plurality of sample columns and an automatic injection unit which sequentially and successively advances the cassette and removes each sample therefrom in accordance with the test to be conducted on the sample. The cassette-like sample carrier utilizes a plurality of sample columns disposed in line with each other, with the body of the cassette being unsymmetrical to prevent reversal thereof in the injection machine. The injection machine, when a sample cassette is placed thereon, automatically advances the cassette to the first sample column, connects the column to the chromatographic or other system, removes the sample therefrom, decouples the sample tube from the system and again advances the cassette to the next sample tube therein for similar processing thereof. The injection apparatus engages the cassette in a manner to sequentially provide positive sealing for each sample tube therein and support for that tube so that high pressures may be used in conjunction with a plastic cassette without requiring the cassette to support such pressures and without requiring additional special seals with respect thereto.

REFERENCES:
patent: 4289620 (1981-09-01), Hara

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