72 Troubleshooting and Maintenance Manual
4 General Maintenance
To Refill the EI Calibration Vial
Materials needed
• PFTBA (05971-60571) 
Refill
1 Stop any tuning or data acquisition.
2 Turn off the MS electronics. 
3 Remove the RIS upper cover. See the Agilent 7200 Accurate-Mass Q-TOF 
GC/MS System Operation Manual.
4 Turn the calibration vial collar counterclockwise to loosen it (Figure 7). 
Do not remove the collar.
5 Pull the calibration vial out. You may feel some resistance due to the 
O-ring around the vial tube section.
6 Syringe or pipette PFTBA into the vial. With the vial vertical, the liquid 
should be just below the end of the internal tube, approximately 70-120 µL 
of sample. 
7 Push the calibration vial into the valve as far as possible.
8 Withdraw the vial 1 mm. This prevents damage when you tighten the 
collar.
Figure 7   Removing the EI calibration vial