Sample injection

Details Sample injection Sample injection

1982-01-18

1984-04-10

Marcus, Michael S.

Chemistry: analytical and immunological testing

Including chromatography

55197, 55386, 137561A, 73 231, 436174, 422 89, G01N 3108

Patent

active

044422172

ABSTRACT:
Samples of substances from sources of variable temperature and pressure are injected into a stream of fluid carrier, for example in chromatographic analysis, without bringing them into contact with moving parts. A stream of the substance is passed through a restriction to the junction of a vent and an injection limb each containing flow restrictions, and carrier fluid is fed alternatively upstream of those restrictions. By thermostatting the injection limb and appropriately selecting the various flow rates constant sized samples may be secured by switching the carrier fluid from the injection limb to the vent for constant times.

REFERENCES:
patent: 3357233 (1967-12-01), Roof
patent: 3374799 (1968-03-01), Lyman
patent: 3426600 (1969-02-01), Bochinski
patent: 3668834 (1972-06-01), Deans
patent: 3712028 (1973-01-01), Deans
patent: 3753653 (1973-08-01), Brieva et al.

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