Measuring and testing – Gas analysis – Gas chromatography
Reexamination Certificate
2008-03-18
2008-03-18
Larkin, Daniel S. (Department: 2856)
Measuring and testing
Gas analysis
Gas chromatography
C073S023350, C073S023400, C073S023420, C095S082000, C096S101000, C096S102000, C096S105000, C422S089000
Reexamination Certificate
active
11295233
ABSTRACT:
A hand-held, ultra-sensitive gas chromatograph which provides real time detection and analysis of chemical compounds or impurities is disclosed. The detection sensitivity ranges from parts per trillion to parts per million with an average retention time ranging from thirty to forty-five seconds. Optimum calculated effective plate number is 55,000, with a response time on the order of two minutes. The self-contained apparatus operates on twenty-four watts, weighs twelve pounds, and measures 8″×6″×13.″
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Larkin Daniel S.
Thoeming Charles L.
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