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(A) Ion mobility spectrum of Agilent tuning mix components at the following conditions: TW speed of 124 m/s, TW amplitude of 30 V, guard bias of 5 V, RF amplitude of 220 Vpp at 650 kHz, and 2.75 mm gap at 4.00 Torr. (B) Resolution for the m/z 622 and 922 peaks measured as a function of TW speed at various pressures from 2.00 to 4.00 Torr at TW amplitude of 30 V. Other parameters were similar to (A).
