Get current pricing for Applied Biosystems, 4000 QTRAP PARTS Applied Biosystems 4000 Q-trap Parts Q3 For Ab 4000 Qtrap(p/n 207387-001 Assembly # 1004756) Q2 For Ab 4000 Qtrap(wc026173 P/n 017637-c0) (p/n 0186 . Product Category: Lab Equipment, Sub Category: Mass Spectrometer: