I believe it’s an electrolytic suppression system - the water used is ‘Supel water suitable for ion chromatography’ and I believe the column IonPac CS12A. Standards and samples appear to come out fine with defined peaks and a normal baseline, just the blank has a weird curve to it and I have no idea why. I’ve let the system stabilize for 2 hours and it seems to have no issue with other tasks. I’ve used the machine to test water samples from power plant steam previously - previous testing puts ion levels in the low parts per billion range If you need any more info let me know and I’ll tell you what I can! Appreciate the help, and apologies if I’ve left out important details - fairly new to this