Method and device for detecting and controlling the level of...

Chemistry: electrical and wave energy – Processes and products – Electrophoresis or electro-osmosis processes and electrolyte...

Reexamination Certificate

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C204S622000, C435S034000, C435S287500, C436S133000, C436S146000

Reexamination Certificate

active

06872291

ABSTRACT:
The presence of biological contaminants in a liquid coating composition is determined by measuring the carbon dioxide content of the atmosphere above the liquid and comparing the measured carbon dioxide level to a baseline carbon dioxide level. A biocide can be added to the liquid when the measured carbon dioxide level reaches a predetermined value to control the level of biological contaminants in the liquid coating composition.

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patent: WO 9105251 (1991-04-01), None
patent: WO 9721096 (1997-06-01), None

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