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Using a Direct Insertion Probe (DIP)
Top Terms To Know
Top Terms To Know
DIP Modes
38
Ion Trap and DSQ Series Direct Probe System User's Guide
b. Use a soft cloth dampened in a mild detergent and water solution to remove dirt.
Never use abrasive cleaners.
c. Wipe the probe with water to remove detergent residue.
d. Allow the probe to dry completely before resuming operation.
3. Clean the sample cups.
If you do not want to clean your sample cups, then use them only once and discard them
appropriately. Otherwise, carefully clean the sample cups before you use them. Sample
cup contaminants contribute to the ion current during evaporation.
a. Clean the sample cups in an ultrasonic solvent bath.
b. Dry the sample cups in a drying oven at 250 °C.
c. Store clean sample cups in a clean glass container.
d. Use clean forceps to handle the clean sample cups and to avoid contamination.
Figure 33. DIP Sample Probe and Sample Cup
The DIP can be operated in either ballistic mode or temperature-programmed mode. To
program the DIP for the ballistic and temperature-programmed modes, use the DPC keypad
after the DIP, DPC, and mass spectrometer are connected.
• Ballistic Mode
When using the DIP in ballistic mode, the probe heats at the maximum possible rate
(approximately 150 °C/min) until the final setpoint is achieved.
Use the ballistic mode for:
• Checking the evaporation behavior of unknown samples
• Looking for the spectrum or the main peaks of an unknown sample
• Determining the evaporation parameters for the temperature-programmed mode of
operation
• Temperature-Programmed Mode
Thermo Scientific
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