Figure 14.
Configuring yourGC is simple! Prepare the lines by cutting them as shown. (Agilent 6880)
19
SeptumPurge
Attaches toElectronic Pressure
Control (EPC) Unit of
Chromatograph
Split Line
ToP&T
CarrierGas
Cut Lines, AddBrass Nuts
Figure 15.
Carrier gas flow is adjusted through the injection port regulator. Carrier gas sweeps
analytes from the trap, through the transfer line, onto the column. (Tekmar 3100)
Figure 16.
Reconnect theweldment lines to theGC and check for leaks.
Be sure to set up the lines correctly. (Agilent 6890)
FromGC
CarrierGas
HeatedTransfer
Line (ToGC
InjectionPort)
SeptumPurge
Split Vent
Gas Lines
packed columns, we recommend using aVu-Tight
®
inlet liner (cat. #20342, page 18). The
wide-bore capillary column is sealed into the tapered restriction in the liner, ensuring direct
transfer of the sample to the column. In addition, theVu-Tight
®
inlet liner allows visual
inspection of the column-to-liner seal.
Low-Volume Injectors:
A low-volume injector (LVI) will reduce dead volume, yet allow
limitedmanual injections. Such a system can be used to convert a packed column or a capil-
lary split/splitless injection port for purge and trap applications. The internal volume of the
injector is significantly reduced, compared to a conventional injection port, which improves
sample transfer from the purge and trap system. The purge and trap transfer line is connected
to the LVI, and thewide-bore column is connected at the base of the injector.A septum in the
LVI allowsmanual injections if needed.
LowVolume Injectors
Description
cat.#
Low-Volume Injector for Agilent
Split/Splitless GC Inlets
21692
Low-Volume Injector for Agilent
5890 SeptumPacked Purge Port
21698
Low-Volume Injector for Varian
Split/Splitless GC Inlets
21693
For descriptions of low-volume injectors,
see page 63.
