IonPacAS9-SC
034656-06
Page 26 of 28
C. If you are running in the
AutoSuppression External Water Mode
, turn off the external water and disconnect the
external water line from the AAES
REGEN IN
port.
D. Disconnect the liquid line from the AAES
ELUENT OUT
port to the cell at the cell fitting and reconnect it to the
REGEN IN
port.
E.
Connect a temporary line from the priming block or the low-pressure tee on the isocratic or gradient pump to a
container with a solution of 0.5 M oxalic acid. Pass 60 mL of this solution through the AAES using the Trap Column
/ Suppressor Clean-up Kit (P/N 059649) or pump this solution through the AAES at 2.0 mL/min for 30 minutes.
NOTE
Bypassing internal pump manifolds when temporarily pumping high concentration cleaning solutions significantly
reduces the time required to re-equilibrate the system to low concentration eluents.
F.
Flush the AAES with deionized water at 2 mL/min for 30 minutes.
G. Reinstall the AAES according to procedures in Section 4.2.1, “Eluent and Regenerant Flow Path Connections in the
AutoSuppression Recycle Mode Operation” or Section 4.3.1, “Eluent Flow Path Connections in the AutoSuppression
External Water Mode Operation” and resume operation.
Organic Contaminants
A. Turn off the power to the AAES.
B. Disconnect the analytical (and guard) column(s) from the injection valve and the AAES. Refer to the specific analytical
column Product Manual for column cleanup procedures.
C. If you are running in the
AutoSuppression External Water Mode
, turn off the external water and disconnect the
external water line from the AAES REGEN IN port. If you are running in the
AutoSuppression Recycle Mode
,
proceed to D.
D. Disconnect the liquid line from the AAES
ELUENT OUT
port to the cell at the cell fitting and reconnect it to the
REGEN IN
port.
E.
Connect a temporary line from the priming block or the low-pressure tee on the isocratic or gradient pump to a
container with a solution of freshly prepared 10% 1.0 M H
2
SO
4
/90% acetonitrile. H
2
SO
4
/acetonitrile solutions are not
stable during long term storage so this cleanup solution must be made immediately before each column cleanup.
Alternatively, it can be proportioned from 1 bottle containing 1.0 M H
2
SO
4
and another bottle containing 100%
acetonitrile. Pass 60 mL of this solution through the AAES using the Trap Column / Suppressor Clean-up Kit (P/N
059649) or pump this solution through the AAES at 1.0 mL/min for 60 minutes.
NOTE
Bypassing internal pump manifolds when temporarily pumping high concentration cleaning solutions significantly
reduces the time required to re-equilibrate the system to low concentration eluents.
F.
Flush the AAES with deionized water at 2 mL/min for 30 minutes.
G. Reinstall the AAES according to procedures in Section 4.2.1, “Eluent and Regenerant Flow Path Connections in the
AutoSuppression Recycle Mode Operation” or Section 4.3.1, “Eluent Flow Path Connections in the AutoSuppression
External Water Mode Operation” and resume operation.
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