Triple Quad Systems

Tandem mass spectrometry (MS/MS) uses quadrupole mass analyzers in series to obtain quantitative information for a variety of analytes. In MS/MS mode. the first mass analyzer (Q1) selects the ions of interest, the ions are then fragmented in the collision cell (Q2), and the fragments are analyzed in the third quadrupole (Q3).  In MS/MS operation, different scan modes can be used to get complementary, qualitative information about the sample.