High resolution - nanoESI

NanoESI employs the same technique as ESI, with the difference being the flow rate used in the introduction of the dissolved analyte into the ionisation source. While ESI works with flow rates of mL/min or µL/min, nanoESI works with flow rates of nL/min. In addition, the capillary is smaller in diameter than the one used in the ESI process. Thus, the sensitivity of the process is increased instead of increasing the analyte concentration in the sample.