Hardware manual

Technical Information 6
Agilent 7500 Series ICP-MS Hardware Manual 6-17
Octopole Reaction System
Figure 133 Off-axis Ion Lens + Octopole Reaction Cell
The Octopole Reaction System (ORS) is an octopole ion guide contained
within a stainless steel vessel and pressurized with a gas, most often H
2
or He.
The ORS is positioned between the ion lens assembly and the quadrupole mass
filter. As ions from the sample enter this cell, they interact with the gas,
resulting in the reduction of the molecular interference normally below the
level of the blank solution.
The ORS Eliminates key interferences arising from the sample matrix that are
not argon based and cannot be eliminated using “traditional” approaches.
Reaction Gas
Quandrupole
Detector
Octopole Reaction Cell
Extraction-Omega Lens