Chemistry: analytical and immunological testing – Including sample preparation – Volumetric liquid transfer
Patent
1990-12-13
1992-03-10
Lacey, David L.
Chemistry: analytical and immunological testing
Including sample preparation
Volumetric liquid transfer
436174, 422100, G01N 110
Patent
active
050949616
ABSTRACT:
For use in automated or semi-automated hematology analysis apparatus, a method of introducing a volume of blood from a source thereof along a conduit leading to a sampling, metering and transfer valve assembly of the apparatus comprising the steps of drawing a predetermined volume of blood sample from the source, causing the drawn blood sample to travel along the conduit toward the valve assembly, providing detectors adjacent the inlet and outlet of the valve assembly and using vacuum to position the drawn blood sample so that it passes through the valve assembly and is disposed in metering condition within the valve assembly, the positioning being responsive to signals provided by the detectors.
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del Valle Roberto
Vargas Santos E.
Wills Stuart D.
Coulter Corporation
Daley Thomas E.
Fox Sidney N.
Hibnick Gerald R.
Lacey David L.
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