The Dionex DRS 600, Dionex ERS 500e, and Dionex AERS 500 Carbonate can be regenerated electrolytically. Although this is slower than Chemical Regeneration, it does not require the suppressor to be disconnected or the use of any reagents.

Procedure

  1. Turn on the system with the normal application settings. If using gradient elution, set the eluent concentration to the maximum value usually seen in the gradient.
  2. (Dionex ERS 500e, and Dionex AERS 500 Carbonate) Set the current of the suppressor to 60% higher than the optimal current (e.g., if the optimal current is 50 mA, set the current to 80 m). This is the maximum suppressor current reported by Chromeleon in the Instrument Program settings.
  3. Leave the system running with the suppressor set to the higher current (Dionex ERS 500e and Dionex AERS 500 Carbonate only) for a minimum of 3 hours, up to 6 hours.
  4. Set the current back to the optimal current (Dionex ERS 500e and Dionex AERS 500 Carbonate only) and return to normal operation.

CAUTION

Do not exceed the maximum allowed current for the suppressor:

  • Dionex AERS 500e (4 mm): 500 mA
  • Dionex CERS 500e (4 mm): 300 mA
  • Dionex AERS 500e (2 mm): 150 mA
  • Dionex CERS 500e (2 mm): 110 mA
  • Dionex AERS 500 Carbonate (4 mm): 125 mA
  • Dionex AERS 500 Carbonate (2 mm): 30 mA.