Waters SYNAPT G2 Operator's, Overview And Maintenance Manual page 185

Warning:
to connect the grounded union to the reference probe.
10. Connect the grounded union to the LockSpray source's reference probe.
• For the LockSpray source, use 1/16-inch PEEK tubing connected as
follows:
– At the grounded union end, use a long "finger tight" fitting.
– At the source reference-probe connection, use the PEEK, "finger
tight" nut and ferrule.
• For the NanoLockSpray source, see
and capillary" on page
Caution:
you close the access door to the IntelliStart Fluidics system.
11. Close the access doors to the IntelliStart Fluidics system.
To avoid electric shock, do not use stainless steel tubing
5-89.
Ensure that the tubing does not become trapped when
Replacing the IntelliStart Fluidics tubing 5-107
"Installing the new TaperTip