Electrospray (ESI) Source

Electrospray ionization (ESI) is a mainstay of LC/MS that can be used to analyze large and small analytes. The Agilent electrospray ion source uses patented orthogonal nebulization and a heated counterflow drying gas system to achieve excellent sensitivity and robust, reliable performance. A dual-nebulizer ESI source is available for TOF and Q-TOF instruments, with the second nebulizer dedicated to the continuous introduction of a reference mass to ensure superior mass accuracy.