Operation Guide
Cool On-column Injection
19
Cool On-column Injection
For an 6890 GC with a cool on-column inlet, the 7683 Automatic Liquid Sampler
can perform injections directly onto 250-µm, 320-µm, and 530-µm columns. For
a list of consumables needed to perform these injections, see Volume 2 of your
GC Operating Manual.
When performing cool on-column injections, the injector:
• Slows the carriage speed so the overall injection time increases to
500 milliseconds.
• Lowers the tip of the syringe needle an additional 19 mm onto the column.
If you need to adapt your injector for cool on-column injection, change the inlet
column size, or change the septum nut or cool on-column insert, refer to your
Agilent 7683 Installation Guide and to your Agilent 6890 GC Operating Manual,
Volume 2, Inlets.
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