The seven main anions can be separated using an anion analysis column for non-suppressor method IC NI-424. The theoretical plate number of the column is more than double that of the existing column IC I-524A.

Features of NI-424 Column

1. (1)NI-424 column has achieved separation of phosphoric acid ion and fluoride ion which was difficult to sepatate using I-524A.
2. (2)With NI-424, each peak is sharper, and separation of ions and peak balance have been improved. In particular, improvement has been made in the separation of chloride and nitrite ions making NI-424 column suited to the analysis of a trace amount of nitrite ion contained in high-concentration chloride ion; demand for such analysis is high in the area of environmental analysis.

Sample: 20 µL

1. 1.H₂PO₄^- 10 mg/L
2. 2.F^- 1 mg/L
3. 3.Cl^- 1 mg/L
4. 4.NO₂^- 5 mg/L
5. 5.Br^- 5 mg/L
6. 6.NO₃^- 5 mg/L
7. 7.SO₄^2- 5 mg/L