The Octopole Reaction System (ORS) is an octopole ion guide contained within a stainless steel vessel and pressurized with a gas, most often H2 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.
Eliminates key interferences arising from the sample matrix that are not argon based and cannot be eliminated using “traditional” approaches.