An inward opening oven intake for a gas chromatographic (GC) oven includes an
inward opening intake flap that opens into the GC oven near the bottom of the GC
oven. Opening at a flap angle, the inward opening intake flap creates a low-pressure
region to draw a large amount of airflow into the GC oven during cool-down. In
addition, the inward opening oven intake manipulates the airflow within the GC
oven to more efficiently draw heat away from the oven walls. This greater efficiency
allows for faster cycle time and higher sample throughput.