Measuring and testing – Sampler – sample handling – etc. – Capture device
Patent
1989-07-24
1991-01-15
Raevis, Robert
Measuring and testing
Sampler, sample handling, etc.
Capture device
G01N 3506
Patent
active
049844750
ABSTRACT:
The sample liquids analysis system includes a probe which is automatically operable to successively aspirate sample liquids and reagent and/or other sample liquids processing liquids and to dispense the same in turn into sample liquids analysis apparatus for automatic, successive sample liquids analyses. Isolation liquid supply apparatus are operatively associated with the sample liquids aspirating and dispensing probe and operate to introduce an isolation liquid which is immiscible with the sample liquids and which selectively wets the probe to the substantial exclusion of the sample liquids, to the probe to, in combination with operatively associated rinse liquid supply apparatus which operate to fill the probe with a rinse liquid between successive sample liquids aspirations, reduce sample liquids carryover to ultra low levels. The sample liquids aspirating and dispensing probe are operated by the rinse liquid supply apparatus; and comprise a probe body member, and an active probe component operatively connected thereto by a readily disconnectable connector, thus making possible the ready and convenient replacement of the active probe component without adverse effect upon the essential configuration and/or operational characteristics of the rinse liquid supply apparatus, and thereby upon the overall performance of the sample liquids analysis system. The configuration of the probe operates to reduce sample liquids flow velocity in the active probe component, thereby further reducing sample liquids carryover.
REFERENCES:
patent: 4121466 (1978-10-01), Reichler et al.
patent: 4517850 (1985-05-01), Wiseman et al.
Di Domenico Nicholas F.
Uffenheimer Kenneth F.
Weitz Stephen L.
Greenman Jeffrey M.
Raevis Robert
Romano, Jr. James J.
Tritech Partners
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