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- Posts: 1
- Joined: Mon Mar 01, 2021 3:24 pm
Currently I have a problem with a Metrohm IC 761 instrument with column Supp4 , where the baseline has a high conductivity of a round 30 μS/cm. I am using Sodium biocarbonate: 1.7 mmol/L; 286 mg/2 L
Sodium carbonate: 1.8 mmol/L; 382 mg/2 L
I tried to rinse with distilled water, regenerate the suppressor with 50 mmole/l H2SO4.. It definitely improved but now its fixed. I also tried after I removed the column and still the same.
The only thing I don't do as suggested is the filtration process since I don't have at the moment 0.45 µm so I use bigger one.
Any suggestions what might be the causes?
Best regards,
Moaaz Shehab