Liquid purification or separation – Processes – Including controlling process in response to a sensed condition
Patent
1997-09-03
1999-11-09
Drodge, Joseph W.
Liquid purification or separation
Processes
Including controlling process in response to a sensed condition
210 94, 356 39, 250234, 422 8209, 436164, 494 10, B01D 1712, B04B 1500, G01N 2100
Patent
active
059807571
ABSTRACT:
A viewing area in a blood separation chamber is monitored for the presence of an interface region between plasma and cellular blood components. Sensed optical density values for the viewing area are compared to a calibrated threshold value to generate a time pulse output. A calibration element derives the calibrated threshold value based upon either (i) a comparison of a sensed reference optical density value in the viewing area to an expected optical density value for the reference material, or (ii) a sensed optical density value of plasma exiting the blood separation chamber, or both.
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Brown Richard I
Foley John T
Min Kyungoon
Sahlin Mark
Baxter International Inc.
Drodge Joseph W.
Price Bradford R. L.
Ryan Daniel D.
Serewicz Denise M.
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