Gas chromatography apparatus with a temperature controlled sample injection port

摘要

A gas chromatograph has a heater system, surrounded by a cooling spiral (7) having coolant feed and return lines (8,9) connecting it to an external source for liquid coolant, a circulating pump (11) and a discharge valve (12). The coolant source is preferably a reservoir (10) provided with a Peltier element (13) or a refrigeration condenser.