A generalized schematic of the uniform field IM-MS used in this work. Instrument components are as follows: (A) orthogonal “Jet Stream” electrospray ion source, (B) ion transfer capillary, (C) high pressure ion funnel, (D) trapping ion funnel, (E) uniform field drift tube, (F) rear ion funnel, (G) transfer hexapole, (H) quadrupole mass filter, (I) hexapole collision cell, (J) beam compressor, and (K) time-of-flight mass spectrometer, with (L) 2-stage reflectron and (M) microchannel plate detector. The ion beam path is highlighted in blue.