D
Setting Up Sample Introduction Techniques
Setting Up H-ESI or Low Flow H-ESI Direct Infusion
134 TSQ Altis, Quantis, and Fortis Hardware Manual Thermo Scientific
1. With sample in the syringe, follow the procedures in Appendix B, “Setting Up the
Syringe with the Syringe Pump.” (1Figure 69). The syringe pump is not shown.
2. Insert the grounding union (2) into the grounding union holder (3).
3. Use PEEK fittings to connect the red PEEK tubing (5) to the grounding union (2) on the
H-ESI spray insert (4).
4. Use a PEEK fingertight fitting to connect another length of red PEEK tubing (6) with the
syringe union adapter (1).
5. Use a PEEK fighertight (not shown) fitting to connect the other end of the red PEEK
tubing (6) to the grounding union (3).
Figure 69. H-ESI direct infusion
IMPORTANT To prevent the EMRS from degradation, observe the following precautions:
• Do not return any EMRS back to the original vial. Once the EMRS is out of the vial,
either use it or discard it.
• Use acetonitrile as a rinse solvent.
• Do not store the EMRS in a glass syringe. You may transfer the EMRS in a glass
syringe, but always discard any unused EMRS and rinse the syringe with acetonitrile.
• If you observe degradation products in the mass spectrum of the EMRS, rinse
everything in the sample line with acetonitrile (the fittings, syringe, tubing, and
union).
• Take these storage precautions for calibration and reserpine solutions: Refrigerate the
containers after opening. For long-term storage, keep refrigerated at 2–8 °C.
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