Serum sample with HPLC-Chip/6320 Ion Trap LC/MS, EIC of 311.1 (155.9, 217.9, 245.0), 1 µL injection. HPLC-Chip/MS for reliable high sensitivity nanospray The easy-to-use HPLC-Chip/MS system significantly improves your nanoflow separations by eliminating all post-column dead volumes and is ideally suited for high sensitivity nanospray LC/MS