2
Functional Description
Transfer Line
20
TSQ Quantum XLS and TSQ Quantum GC User Guide
Thermo Scientific
The direct exposure probe (DEP) has a heated filament that rapidly vaporizes liquids or
solutions. The DEP is ideal for rapid molecular weight confirmation of liquids or solids
dissolved in a suitable solvent. The DEP can vaporize compounds with a high boiling point.
The direct insertion probe (DIP) has a temperature-controlled, heated capillary tube that
slowly vaporizes solid samples. You can use the DIP for rapid analysis of solids or trace
components in solid matrices, such as forensic samples or tissue.
Figure 7.
Direct sample probe and controller
Transfer Line
The transfer line is the interface between the GC and mass spectrometer. The transfer line
heats the capillary column as it passes from the GC into the ion source in the mass
spectrometer. This prevents the sample from condensing. The transfer line includes an inlet
for calibration gas and chemical ionization gas.