Thermoelectric cold trap
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United States of America Patent
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Jun 20, 2000
Grant Date -
N/A
app pub date -
Dec 18, 1998
filing date -
Dec 18, 1998
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A compact, portable, thermoelectric cold trap for capturing certain gaseous species for analysis in gas chromatographs is disclosed. The U-shaped heat exchanger and T-shaped cold block for holding the adsorbent tube and heater allow the unit to operate over a temperature range from -45.degree. to 300.degree. C. The thermoelectric cold trap is portable and may be retrofitted to new or existing gas chromatographs. The adsorbent tube and heater are also replaceable. A method of assembling the thermoelectric cold trap and a method of operating the thermoelectric cold trap are also disclosed.
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