4
– Example Applications
Thermo Scientific
Product Manual for the ERS 500 Suppressor
Page 48 of 84
031956-11
For Research Use Only. Not for Use in Diagnostic Procedures.
4.6.2
Dionex IonPac AS11 Gradient Analysis of 10% Sodium Hydroxide
Sample:
100 µL of 10% NaOH neutralized in the SP10 AutoNeutralizer
Concentrator Column:
Low Pressure Trace Anion Concentrator
(i.e., Dionex UTAC-XLP2, Item # 072781)
Trap Column:
Anion Trap Column (i.e., Dionex ATC-HC 500, Item # 075978)
Guard Column:
Dionex IonPac AG11 Guard Column
Analytical Column:
Dionex IonPac AS11 Analytical Column
Eluents
E1:
Type I Deionized Water
E2:
5.0 mM NaOH
E3:
100 mM NaOH
Eluent Flow Rate:
2.0 mL/min (4-mm)
Electrolytic Suppressor:
Dionex Anion Electrolytically Regenerated Suppressor, Dionex AERS 500
Recycled Eluent Mode
or Chemical Suppressor:
Dionex Anion Chemically Regenerated Suppressor, Dionex ACRS 500
Chemical Regenerant:
50 mN H
2
SO
4
Expected Background Conductivity:
0.5 mM NaOH: 1 µS
35 mM NaOH: 3.5 µS
Expected System Operating
Back Pressure:
Without Guard: 1,600 psi (11.03 MPa)
With Guard: 1,850 psi (12.75 MPa)
Figure 8
Dionex IonPac AS11 Gradient Analysis of Blank, Standard, 10% NaOH
Sample and Spiked 10% NaOH Sample
