Agilent Technologies G1946-80259 10uA Vcap/Vchamber Power Supply. 10 µA Vcap/Vchamber fast polarity switching capillary and chamber power supply, for resistive capillary; not to be used with G6550A; used with single quad 61XX series, TOF 62XX series, triple quad 64XX series, and Q-TOF 65XX series, models 61XX, 62XX, 64XX, and 65XX