5 Maintenance
Installing the capillary
113 Agilent Triple Quadrupole LC/MS System User Guide
Installing the capillary
Schedule
After cleaning the capillary or when installing a new capillary.
Equipment List
• Clean powder-free nitrile gloves
• LC/MS-grade isopropanol
Steps
1 Put on clean, powder-free nitrile gloves.
2 Lubricate the capillary entrance end with LC/MS-grade isopropanol.
3 Carefully insert the capillary straight into the desolvation assembly. The
capillary must be aligned correctly so that its end fits into a fixed capillary cap
inside the desolvation assembly.
Putting vertical and horizontal pressure on the capillary can break it. Spray
capillary with isopropanol to lubricate the capillary for easier removal.
4 When 2 to 3 cm of the capillary remains extended from the desolvation
assembly, the capillary rests against the rear contact spring, which slightly
restricts further insertion of the capillary. Slightly increase the insertion force
to push the capillary through the rear contact spring to fully insert the
capillary.
5 Continue to apply pressure until approximately 1 cm remains extended from
the desolvation assembly.
Do not twist or turn the capillary cap when you install it or you can damage the
metal plating.
6 Install the contact ring and end plate.
7 Install the two T10 Torx screws to hold the end plate.
8 Lubricate the capillary tip with LC/MS-grade isopropanol.
9 Install the capillary cap over the outer end of the capillary.
10 Install the spray shield.
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