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Product Manual for IonPac CS16
3.6.
IonPac CG16 Guard Columns
An IonPac CG16 Guard Column is normally used with the IonPac CS16 Analytical or Capillary Column. Retention times
will increase by approximately 20% when a guard column is placed in-line prior to the analytical/capillary column. A guard
is placed prior to the analytical/capillary column to prevent sample contaminants from eluting onto the analytical/capillary
column. It is easier to clean or replace a guard column than it is an analytical/capillary column. For maximum life of the
analytical/capillary column, the guard column should be changed or replaced as part of a regular maintenance schedule or at
the first sign of performance deterioration. Use the test chromatogram that is shipped with the analytical/capillary column or
the initial application run for a performance benchmark.
3.7.
Eluent Storage
IonPac CS16 columns are designed to be used with sulfuric acid or methanesulfonic acid (MSA) eluents. Storage under a
helium atmosphere ensures contamination free operation and proper pump performance (nitrogen can be used if eluents do
not contain solvents).
3.8.
Cation Self-Regenerating Suppressor and Cation Capillary Electrolytic Suppressor
Requirements
A Cation Self-Regenerating Suppressor should be used for applications that require suppressed conductivity detection. It is
compatible with solvent containing eluents and aqueous ionic eluents of all concentrations with which the systems and
columns are compatible. Aqueous ionic eluents can be used in all CSRS 300 modes of operation.
Solvent containing eluents must be used in the Chemical Suppression Mode using either the CSRS 300 or
CMMS 300 Suppressor. (If the CSRS 300 is used with solvents, be sure to use TBAOH as regenerant and with
!
no current applied to the CSRS 300 suppressor)
NOTE
When the oven is operated at > 40 °C, the suppressor should be placed outside the oven.
If you are installing an IonPac CS16 5-mm Analytical Column, use a CSRS 300 (4-mm, P/N 053948). If you are installing an
IonPac CS16 3-mm Analytical Column, use a CSRS 300 (2-mm, P/N 053949). If you are installing an IonPac CS16 0.5-mm
Capillary Column, use a CCES 300 (P/N 072053).
For detailed information on the operation of the Cation Self-Regenerating Suppressor, see Document No. 031139, the
"Product Manual for the Cation Self-Regenerating Suppressor 300, the CSRS 300 (4-mm) and the CSRS 300 (2-mm)." For
detailed information on the operation of the Cation Capillary Electrolytic Suppressor, see Document No. 065386.
3.9.
Cation Atlas Electrolytic Suppressor Requirements
A Cation Atlas Electrolytic Suppressor, CAES®, may be substituted for the CSRS 300 for applications up to 25 µeq/min. For
detailed information on the operation of the Cation Atlas Electrolytic Suppressor, see Document No. 031770, the "Product
Manual for the Cation Atlas Electrolytic Suppressor."
3.10. Cation MicroMembrane Suppressor Requirements
A Cation Self-Regenerating Suppressor, CSRS 300, should be used for applications that require suppressed conductivity
detection. It is compatible with all solvents in the AutoSuppression External Water Mode (see Section 3.7, "Cation Self-
Regenerating Suppressor Requirements"). A Cation MicroMembrane Suppressor, CMMS, may be substituted for the CSRS
300. For detailed information on the operation of the Cation MicroMembrane Suppressor, see Document No. 034359, the
"Product Manual for the Cation MicroMembrane Suppressor 300, the CMMS 300."
3.11. Using Displacement Chemical Regeneration (DCR) with the Chemical Suppression Mode
Dionex recommends using the Displacement Chemical Regeneration (DCR) Mode for chemical suppression using
tetrabutylammonium hydroxide (TBAOH) and the Cation MicroMembrane Suppressor (CMMS 300). See the DCR kit
manual, Document P/N 031664, for details.
Document No. 031747-05
© 2010 Dionex Corporation
Page 14 of 65
December 2010
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