Automatic sample apparatus, valve and sampling method

Details Automatic sample apparatus, valve and sampling method Automatic sample apparatus, valve and sampling method

1984-09-06

1986-11-11

Levy, Stewart J.

Measuring and testing

Sampler, sample handling, etc.

Analyzer supplier

G01N 100

Patent

active

046215344

ABSTRACT:
The present invention relates to an automatic sampling apparatus for sample injection into a gas chromatographic column. In order to allow automatic injection with a non-vaporizing direct on-column injector, the apparatus includes a switch valve, an on-column injector, and a pre-column each having a passage with a diameter greater than 0.5 mm for receiving the injection syringe. The present invention also relates to a device provided with a series of small arms for driving the needle during injection, a switch valve constructed and arranged in a manner to prevent any contamination of the injector by the sample during the injection step, as well as an injection method which can be used with the apparatus and switch valve.

REFERENCES:
patent: 3401564 (1968-09-01), Hrdina
patent: 3693455 (1972-09-01), Harding et al.
patent: 3748911 (1973-07-01), Rousselet
patent: 3841160 (1974-10-01), Iwao
patent: 3842680 (1974-10-01), Vollick
patent: 3911749 (1975-10-01), Hendry
patent: 4094195 (1978-06-01), Friswell
patent: 4454749 (1984-06-01), Guillemin et al.
patent: 4516437 (1985-05-01), Pedroso et al.

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