Agilent Technologies 7820A Advanced User's Guide

Inlets 3
Advanced User Guide 43
About the Cool On-Column Inlet
This inlet introduces liquid sample directly onto a capillary
column. To do this, both the inlet and the oven must be cool at
injection, either at or below the boiling point of the solvent.
Because the sample does not vaporize immediately in the inlet,
problems with sample discrimination and sample alteration are
minimized. If done properly, cool-on column injection also
provides accurate and precise results.
You can operate the inlet in track oven mode, where the inlet
temperature follows the column oven, or you can program up to
three temperature ramps. A cryogenic cooling option that uses
liquid CO
2
or N
2
from the oven cryogenic system can reach
sub-ambient temperatures.
Valve
Frit Frit
Valve
EPC Module
Cool on Column
Inlet Weldment
PS = Pressure Sensor
PS
PS
Carrier Supply
80 PSI
Septum Purge
Column
Septum
Column Adapter
Ferrule
Column Nut
Column

Agilent Technologies 7820A Specifications

General

Brand	Agilent Technologies
Model	7820A
Category	Laboratory Equipment
Language	English