Cleanup; Organic Contaminants Or Precipitates - Thermo Scientific Dionex ACRS-ICE 500 Product Manual

5

– Cleanup

5. Cleanup
This section describes routine cleanup procedures for the Dionex Anion Chemically
Regenerated Suppressor for ICE (Dionex ACRS-ICE 500), in the case of contamination.
Consult the Troubleshooting Guide (see Section 4) to first determine that the system is operating
properly. If the Dionex ACRS-ICE 500 is determined to be the source of higher than normal
back pressure, higher than anticipated conductivity, decreased suppression capacity or decreased
sensitivity, cleaning the membrane may restore the performance of the system. Use the
following procedures to clean the membrane.

5.1 Organic Contaminants or Precipitates

A. Disconnect the analytical (and guard) column(s) from the injection valve and the
B. Turn off the regenerant and disconnect the regenerant line from the Dionex ACRS-ICE
C. Disconnect the liquid line from the Dionex ACRS-ICE 500 ELUENT OUT port to the
D. Connect a container of 90% acetonitrile or methanol in 100 mM HCl to the Analytical
E. Flush the Dionex ACRS-ICE 500 with deionized water at 1 – 2 mL/min (9 mm) or 0.25
F. Reinstall the analytical (and guard) column(s). Begin pumping eluent through the
Thermo Scientific
032661-12
Dionex ACRS-ICE 500. Refer to the specific analytical column Product Manual for
column cleanup procedures.
500 REGEN IN port.
cell at the cell and reconnect it to the REGEN IN port.
Pump. Pump this solution through the Dionex ACRS-ICE 500 at 1 – 2 mL/min (9 mm)
or 0.25 – 0.50 mL/min (4 mm) for 30 minutes.
– 0.50 mL/min (4 mm) for 10 minutes.
system at the flow rate required for your analysis and equilibrate the system.
Product Manual for Dionex Anion Chemically Regenerated
Suppressor for ICE
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