Chemistry: analytical and immunological testing – Oxygen containing
Reexamination Certificate
2004-11-02
2009-02-17
Drodge, Joseph W (Department: 1797)
Chemistry: analytical and immunological testing
Oxygen containing
C055S524000, C073S031070, C095S285000, C436S142000, C436S177000
Reexamination Certificate
active
07491547
ABSTRACT:
A filter that allows specific detection of ethylene oxide by a non-specific electrochemical gas sensor through the removal of potential interferent gases, such as alcohols, and carbon monoxide. The filter contains an oxidizing agent that will oxidize the interferent gas but not ethylene oxide or alternatively a polymeric material that allows selective hydrogen bonds to the interferent gas but not ethylene oxide. This filter is intended for use with ambient air gas monitors, such as those employed to enhance work-place safety.
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