IonPac CS14 Manual
Doc. No. 034848-10
Page 18 of 54
5.3
Production Test Chromatogram
Isocratic elution of amines and inorganic cations on the IonPac CS14 Analytical Column has been optimized utilizing
methanesulfonic acid because of its suitability for use with the Cation Self-Regenerating Suppressor CSRS ULTRA (4-mm and
2-mm). By using this eluent, amines and common mono- and divalent inorganic cations can be isocratically separated and
quantitated in a single injection. To guarantee that all IonPac CS14 2-mm and 4-mm Analytical Columns meet high quality and
reproducible performance specification standards, all columns undergo the following production control test.
Sample Loop Volume:
6.25 µL (2-mm), 25 µL (4-mm)
Analytical Column:
IonPac CS14 Analytical Column
Eluent:
10 mM MSA
Eluent Flow Rate:
0.25 mL/min (2-mm), 1.0 mL/min (4-mm)
SRS Suppressor:
Cation Self-Regenerating Suppressor, CSRS ULTRA (2-mm or 4-mm)
Recycle Mode
or MMS Suppressor:
Cation MicroMembrane Suppressor, CMMS III (2-mm or 4-mm)
MMS Regenerant:
100 mN TBAOH
(tetrabutylammonium hydroxide)
or AES Suppressor:
Cation Atlas Electrolytic Suppressor, CAES
(up to 25 µeq/min)
Expected Background
Conductivity:
< 3 µS
Storage Solution:
Eluent
Figure 2
IonPac CS14 Production Test Chromatogram
Analyte
mg/L
1.
Li
+
0.5
2.
Na
+
2.0
3.
NH
4
+
2.5
4.
K
+
5.0
5.
Diethylamine
10.0
6.
Mg
2+
2.5
7.
Ca
2+
5.0
1 mg/L = 1 ppm
0
5
10
15
μ
S
0
Minutes
1
2
3
4
5
6
5
7
