Suppressor Electrolytic Regeneration Steps; Full Or Extended Regeneration - Thermo Scientific Dionex ERS 500 Product Manual

5 – Troubleshooting Guide
5.2.2

Suppressor Electrolytic Regeneration Steps

A. The Dionex ERS 500, Dionex ERS 500e and Dionex AERS 500 Carbonate are unique
B. Turn on the system with the normal application settings, if using gradient elution, set
C. Set the current of the suppressor to 60% higher than the optimal current. e.g., if the
D. Leave the system running with the suppressor set to the higher current for a minimum
E. Set the current back to the optimal current.
Do not exceed the maximum allowed current for a suppressor:
!
CAUTION
5.2.3

Full or Extended Regeneration:

Depending on the extent of capacity loss of the suppressor, the regeneration procedure as
outlined above may be inadequate to fully regenerate the suppressor. In order to fully regenerate
the suppressor an extended rinse (for at least two hours) with 200 mN sulfuric acid (for Dionex
AERS 500, Dionex AERS 500e or Dionex AERS 500 Carbonate) or 200 mN NaOH (for Dionex
CERS 500 or Dionex CERS 500e) at the application flow rate is needed. Pump the acid or base
(as the case may be) through the eluent out port of the suppressor, with a line connecting the
eluent in port to the regen in port. Divert a line from the Regen out port to waste. A standalone
pump or a trap column/suppressor clean-up kit (Item # 059659) could be used for the above
regeneration. Another option is to pursue the regeneration as outlined in
above and then allow the acid or base to soak in the suppressor overnight. In the morning repeat
the regeneration as outlined in
water.
If the correct peak areas are not observed following two injections of a standard test solution,
contact the nearest Thermo Fisher Scientific Regional Office (see Thermo Fisher Scientific
Worldwide Offices on the Reference Library CD-ROM).
Thermo Scientific
031956-11
that they 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.
the eluent concentration to the maximum value usually seen in the gradient.
optimal current is 50 mA, set the current to 80 mA. This is the maximum suppressor
current reported by Chromeleon in the Instrument Program settings.
of 3 hours, up to 6 hours.
Dionex ERS 500 (4 mm) and Dionex ERS 500e (4 mm): 500 mA
Dionex ERS 500 (2 mm) and Dionex ERS 500e (2 mm): 100 mA
Dionex AERS 500 Carbonate (4 mm): 125 mA
Dionex AERS 500 Carbonate (2 mm): 30 mA.
Product Manual for the ERS 500 Suppressor
For Research Use Only. Not for Use in Diagnostic Procedures.
steps 4.2.1. C or D and then displace the acid or base with DI
steps 5.2.1. C or D
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