GC Injectors

Shown below is a schematic diagram of a heated GC injector port for use with a
packed column. The needle pierces a rubber septum and enters into the top of
the column, which is located within a heater block.

figure12-28

Show below is a schematic diagram of a split/splitless injection port for use with a capillary column. The needle pierces a rubber septum and enters into a glass liner, which is located within a heater block. In a split injection the split vent is open; the split vent is closed for a splitless injection.

figure12-30

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