Monovalent and Divalent Cation Standards (6) (Comparison of YS-50 and YK-421)

The six main cations can be separated using a newly developed column, IC YS-50. Comparing with the conventional column IC YK-421, the theoretical plate number of divalent cations becomes more than double and the separation of Na+ and NH4+ becomes about 1.2 times.

Sample :
1. Li+ 2ppm
2. Na+ 10ppm
3. NH4+ 10ppm
4. K+ 20ppm
5. Mg2+ 10ppm
6. Ca2+ 20ppm

Columns      : Shodex IC YS-50 (4.6mmID*125mm)  Shodex IC YK-421 (4.6mmID*125mm)
Eluent       : 4mM Methanesulfonic acid aq.     5mM Tartaric acid + 1mM Dipicolinic acid 
                                                + 1.5g/L Boric acid aq.
Flow rate    : 1.0mL/min                        1.0mL/min
Detector     : Non-suppressed conductivity      Non-suppressed conductivity
Column temp. : 40deg-C                          40deg-C