General Catalog

Professional IC Systems
Suppressor reproducibility
4 uS/cm
1
2
3
4 5
6
7
1 2 3 4 5 6 7 8 9 10 11 12 13 14
For each measurement with the Metrohm Suppressor
Module «MSM II», a fresh suppressor cartridge is
used. Thus, you can always be sure that you are
working with a cation exchanger that delivers its full
performance: today, tomorrow, and even after years
of uninterrupted use. The suppressor is characterized
by its pressure stability; it is 100% solvent-resistant
and impresses with its long working life. As no sensitive
membranes are used, the suppressor reaches its
equilibrium after a very short time and is then ready
for use. That is exactly the reason why we can give
a 10years warranty on the «MSM II». The Metrohm
Suppressor Module is favorably-priced and robust.
Reproducibility of measurements made with the «MSM
II» is excellent as is shown by the chromatograms:
1 Fluoride
2 Chloride
3 Nitrite
4 Bromide
5 Nitrate
6 Phosphate
7 Sulfate
30 injections, separation of standard anions on the
Metrosep A Supp 5 – 150, eluent 1.0 mmol/L NaHCO 3
,
3.2 mmol/L Na 2
CO 3
, flow 0.7 mL/min, loop 20 µL,
suppression with the Metrohm Suppressor Module
«MSM II», regeneration with 50 mmol/L H 2
SO 4
, rinsing
with deionized water.
Ion F – CI – NO 2
–
Br – NO 3
–
HPO 4
2–
SO 4
2–
Concentration (mg/L) 1.00 1.00 1.00 1.00 1.00 1.00 1.00
Rel. standard deviation in % (n=30) 0.46 0.33 0.37 0.37 0.32 0.41 0.37
24 — IC