Hello to all,

I’m running anion analysis on ICS 2000 system with eluent generator NaOH to determine carboxylic acids. I had successfully run the analysis before three months, then I changed to cation (choline determination) and the analysis had half peak area, then changed back to anions and there were also half peak area. So I assume that there is no problem to suppressor or column since the problem is observed on both cation and anion analysis. Had anyone observed the same problem, when changed the instrument from anion to cation or vice versa?

Thanks in advance