AccuTOF-DART 4G mass spectrometer offers new performance capabilities including enhanced resolution, speed, and accuracy in a rugged, flexible, versatile design. The instrument couples the facile operation of the manufacturer’s DART (Direct Analysis in Real Time) ion source with the high-resolution, accurate mass capability of its AccuTOF time-of-flight mass spectrometer. Not only can the user rapidly acquire data for mixtures and complete unknowns without sample carryover, but the resulting spectra yield unambiguous assignments, isotopic ratios and elemental compositions. JEOL