Agilent Technologies 1200 Series Reference Manual page 38

4 Theory of Operation
INJECT Position
In the INJECT position (see
loop (ports 1 and 2 connected). All of the sample is washed out of the loop
onto the column. The needle port is connected to the vent tube (port 5).
Sample loop
Figure 13
38
Figure
Needle
port
INJECT Position
13), the pump is connected to the sample
Pump
Column
1200 Series MI Reference Manual