sheath flow interface

https://doi.org/10.1351/goldbook.12570
Capillary electrophoresis to electrospray ionization interface that uses a coaxial flow of make-up liquid that is introduced through a tube that is concentric with the separation capillary.
Source:
PAC, 2013, 85, 1515. (Definitions of terms relating to mass spectrometry (IUPAC Recommendations 2013)) on page 1590 [Terms] [Paper]