Any analysis that can be performed using the AutoSuppression Recycle Mode can be done using the AutoSuppression External Water Mode. A constant source of deionized water having a specific resistance of 18.2 megohm or greater is supplied to the regenerant chambers to generate hydronium or hydroxide ions for suppression.
NOTE
AutoSuppression External Water Mode is used when organic solvents or metallic contaminants are present in the eluent or sample, borate is used as the eluent, or a destructive detection technique such as PCR-UV/Vis or Mass Spec is employed.
NOTE
Because of its simplicity and equivalent performance, Thermo Fisher Scientific recommends the use of AutoSuppression Recycle Mode unless organic solvents or metallic contaminants are present in the eluent or sample, borate is used as the eluent, or a destructive detection technique such as PCR-UV/Vis or Mass Spec is employed.
For installation in the thermal chamber, see Installation in thermal chamber.