For the routine analysis of samples with high content
of nonvolatile compounds, particulates and other
solid matrix material
Matrix material from samples can contaminate a GC-liner
within a few GC runs , leading to peak broadening
and loss of compounds through adsorption in the liner.
Under such conditions, the analyst is forced to perform
frequent liner replacement, an operation which normally
requires manual intervention. Running large numbers
of samples could represent a serious challenge.
The GERSTEL Automated Inlet Liner Exchange(ALEX)
technology performs the task of replacing liners
in the GERSTEL Cooled Injection System CIS 4. The
ALEX system enables fully automated GC analysis of
samples with a high matrix load as well as "dirty" extracts,
which can be directly injected into the CIS 4 using
the GERSTEL Multi Purpose Sampler MPS 2. Specially
designed trays can hold up to 14 or up to 98 CIS
4 liners in individually sealed, contamination-free
storage compartments.
In connection with the GERSTEL MPS 2, the ALEX system
enables automated CIS 4 liner exchange at predetermined
regular intervals in a sequence.
The GERSTEL MASter Software provides integrated control of the MPS 2, ALEX
system and CIS 4. In combination with the Agilent ChemStation, a single method
and sequence list control the entire system including GC and MSD.
Advantages of the GERSTEL ALEX
system |
| Automated Liner Exchange |
High throughput of
"dirty" samples |
| Based on the CIS 4 inlet |
Direct transfer of existing methods
|
Proven sealing technology
from the TDS / TDU |
Highly reliable system |
| All GERSTEL liners can be used |
Flexible analysis system |
Upgrade available for all
CIS 4 and MPS 2 |
Limited investment for upgrade |
| Uses standard 5x3 mm Septa |
Simple standard procedure |
