LTQ Orbitrap XL Hardware Manual

Gas Supply
Functional Description
Gas Supply
Figure 1-19 shows a schematical view of the gas supply in the
instrument. The LTQ Orbitrap XL uses at least two gases for operation:
• Nitrogen,
• Helium, and
Figure 1-19. Schematical view of the gas supply *
* For parts lists of the gas supply, refer to Table 4-10 on page 4-5.
• Argon (optional).
The linear trap requires high-purity (99%) nitrogen for the API sheath
gas and auxiliary/sweep gas. The Orbitrap uses nitrogen as collision gas
(bath gas) for the curved linear trap and the HCD collision octapole.
The linear trap requires ultra-high purity (99.999%) helium for the
collision gas.
Thermo Fisher Scientific LTQ Orbitrap XL Hardware Manual 1-25