Monovalent and Divalent Cation Standards (4) (Phosphoric Acid Eluent)
Monovalent and divalent cation standards were analyzed using IC 
YK-421.
Please refer to 
YK-421 (tartaric acid + dipicolinic acid eluent)

Sample : 20micro-L
1. 2mg/L 
Li+
2. 10mg/L 
Na+ 
3. 10mg/L 
NH4+
4. 20mg/L 
K+
5. 10mg/L 
Mg2+
6. 20mg/L 
Ca2+
Column       : Shodex IC YK-421 (4.6mmID*125mm)
Eluent       : 4mM H3PO4 aq.
Flow rate    : 1.0mL/min
Detector     : Non-suppressed coductivity
Column temp. : 25deg-C