Sterile loop calibration system
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United States of America Patent
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-
Oct 15, 1991
Grant Date -
N/A
app pub date -
Apr 26, 1990
filing date -
Apr 26, 1990
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An endless path calibration system comprising a sensor cassette having a flow-through passage and at least one sensor to be calibrated, a chamber coupled to the sensor cassette to define an endless path and a sterile calibration liquid in the endless path. A gas injection passage for injecting gas into the sterile calibration liquid and a gas vent leading from the endless path to the exterior of the endless path. A check valve allows gas to escape from the endless path and substantially prevents gas and liquid from entering the endless path through the gas vent.
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