Quadrupole time-of-flight liquid chromatography/mass spectrometer uses high definition TOF technology to provide mass accuracy, mass resolution, dynamic range, sensitivity and speed. It can be used in proteomics, metabolomics and other applications. Thermal gradient focusing provides high femtogram levels of detection. The instrument operates at conventional flowrates (0.1 - 2.5 mL/min). Agilent Technologies Inc., 800-227-9770, www.agilent.com.