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- Posts: 81
- Joined: Wed Dec 28, 2011 6:26 pm
We are analyzing anion by DX120 (about 50 samples a year). We noticed that the linearity of instrument was becoming narrower and there was not enough separation between sulfate and phosphate. We changed the column and the guard column but there was not enough improvement. Dionex suggested to purchase a new suppressor (ERS 500). We followed the direction from Dionex to connect the new suppressor but the system gives us a continuous alarm message with a high conductivity reading. We do not have any leak and we can see the flow (our flow is 1.2). Any suggestions is greatly appreciated.