Automatic chemistry analyzer with improved ion selective electrode assembly
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United States of America Patent
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Nov 10, 1998
Grant Date -
N/A
app pub date -
Nov 13, 1996
filing date -
Nov 13, 1996
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An ion selective electrode assembly is provided having a sample injection cup, a flow cell analyzer and multiple module pump for simultaneously pumping liquids between the sample injection cup and the flow cell analyzer using a single motor. One of the pump modules is capable of pumping a reference solution directly to the flow cell analyzer. Flow through each pumping module is controlled by a pair of rocker valves. The sample injection cup includes a first diaphragm valve for allowing a mixture of sample and reagent to flow to the flow cell analyzer. The sample injection cup further includes a second diaphragm valve installed immediately downstream of the first diaphragm for allowing a flushing solution to flow throughout the sample injection cup and the flow cell analyzer.
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