About The Packed Column Inlet - Agilent Technologies 7890 Series Advanced Operation Manual

3
Inlets

About the Packed Column Inlet

88
This inlet is also known as the purged packed inlet (PP). It
is used with packed columns when high- efficiency
separations are not required. It can also be used with
wide- bore capillary columns, if flows greater than
10 mL/min are acceptable.
If the columns are not defined (packed columns and
undefined capillary columns), the inlet is usually
flow- controlled. If capillary columns are used and the
columns in the flow path are defined, the inlet is normally
pressure- controlled but can be put into the flow control
mode.
The figure shows the inlet in the capillary column mode,
with the column defined and the flow controlled by
pressure.
Advanced Operation Manual