Ptv Troubleshooting; Sensitivity; Discrimination; Large Volume Ptv - Thermo Scientific TRACE GC Ultra Maintenance And Troubleshooting Manual

PTV Troubleshooting

PTV Troubleshooting

Sensitivity

Low sensitivity is commonly caused by incorrect operating conditions. It might
also be due to a dirty liner or to a liner wrong sized with regards to the volume of
the sample injected.
Lack of sensitivity for selected compounds can also be related to discrimination
phenomena induced by inadequate injection conditions.

Discrimination

Possible discrimination of the heavy or volatile fraction of the sample may be
caused by operating conditions set incorrectly with regard to the chosen injection
mode.
Discrimination could also be caused by:
•
•
The
their probable causes and the suggested remedies when using a PTV injector.

Large Volume PTV

The
PTV injector adapted for Large Volume injections.
Maintenance and Troubleshooting Manual
degradation of the thermally labile compounds due to the cathalytic effect of
bad deactivated quartz wool inside the liner
by-products originated in previous injections that have been not completely
eliminated from the liner during the cleaning phase or the cleaning operating
sequence.
PTV Troubleshooting Table
PTVLV Troubleshooting Table
on page 172 reports a list of possible symptoms,
on page 176 will help you in troubleshooting a
Chapter 9
Maintaining a PTV Injector
171