... ;5. Chromatography Analytic System5.1 Imported anion column, a simultaneous analysis of sample F-, Cl-, NO_2, PO43-, Br-, NO3-, SO42- ... +, Ba2 +, choline chloride and other cation separation test.5.3 Analysis of reproducibility: ≤ 1.0% (SO42 Na+ count) The linear range: ... The whole Chinese display, equipped with electronic version of the operation of demonstration, simple operation and easy to master.8 ...