For fast regeneration, it is recommended to follow the steps below for chemical regeneration of the suppressor.

Procedure

  1. Disconnect the eluent line from the analytical column attached to the ELUENT IN port of the Dionex DRS 600, Dionex ERS 500e or Dionex AERS 500 Carbonate at the analytical column end of the line. Direct this line to a separate waste beaker.
  2. Disconnect the eluent line from the ELUENT OUT port of the suppressor.
  3. Do one of the following:
  4. (Dionex ADRS 500, Dionex AERS 500e or Dionex AERS 500 Carbonate): Using a plastic syringe, push approximately 3 mL of 200 mN H2SO4 through the ELUENT OUT port and approximately 5 mL of 200 mN H2SO4 through the REGEN IN port. Flush with 3 mL degassed, deionized water through the ELUENT OUT port and 5 mL degassed, deionized water through the REGEN IN port.
  5. (Dionex CDRS 500 or Dionex CERS 500e): Using a plastic syringe, slowly push approximately 3 mL of freshly prepared 200 mN NaOH (made up using degassed, deionized water) through the ELUENT OUT port and approximately 5 mL of 200 mN NaOH through the REGEN IN port. Flush with 3 mL degassed, deionized water through the ELUENT OUT port and 5 mL degassed, deionized water through the REGEN IN port.
  6. Reconnect the eluent line from the ELUENT IN port of the suppressor to the analytical column and the eluent line from the eluent out port of the suppressor to the conductivity detector cell.
  7. Do one of the following:
  8. (Auto Suppression Recycle mode of operation): Begin pumping eluent and immediately turn on the power. DO NOT let the eluent flow through the SUPPRESSOR FOR MORE THAN A FEW MINUTES without turning on the Power.
  9. (Auto Suppression External water mode of operation): Establish water flow through the regenerant chambers, begin pumping eluent, and immediately turn on the power.

  10. IMPORTANT

    Do not let the eluent flow through the suppressor for more than a few minutes without turning on the power.