초록 ▼

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 anal

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.

대표청구항 ▼

In sample liquid analysis system for the analysis of successive sample liquids comprising sample liquid aspiration and dispensing probe means, and means operatively associated with said sample liquid probe means for coating the interior and exterior walls thereof with an isolation liquid which is im

In sample liquid analysis system for the analysis of successive sample liquids comprising sample liquid aspiration and dispensing probe means, and means operatively associated with said sample liquid probe means for coating the interior and exterior walls thereof with an isolation liquid which is immiscible with said sample liquids and which preferentially wets the interior and exterior probe means walls to the substantial exclusion of said sample liquids, the improvements comprising, means operatively associated with said sample liquid probe means for aspirating a sample liquid segment thereinto, and for subsequently dispensing said sample liquid segment therefrom, and means operatively associated with said sample liquid probe means for subsequently flowing a rinse liquid which is miscible with said sample liquids but immiscible with said isolation liquid through said probe means to remove aspirated sample liquid residue therefrom, thereby reducing sample liquid carryover upon the aspiration by said sample liquid probe means of a succeeding sample liquid thereinto.