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- Posts: 10
- Joined: Tue Apr 04, 2017 1:28 pm
DIONEX ICS-2100
K2CO3 eluent generator cartridge
Background conductivity sits around 13uS
New Suppressor and trap column. Guard column and analytical column are used but not old
3 point calibration (quadratic)
Standard 1:
1ppm Flouride, Chloride, Nitrite, Sulfate
96ppm Nitrate
Standard 2:
4ppm Flouride, Chloride, Nitrite, Sulfate
480ppm Nitrate
Standard 3:
10ppm Flouride, Chloride, Nitrite, Sulfate
960ppm Nitrate
All points on the calibration are fine except 1 ppm sulfate. I consistently get around 1.6. I tried a new lot for calibration standard.
The DI water for the carrier is open to atmosphere, I'm not sure that the container is being cleaned often. I thought the potential existed for microbio growth...
Does anyone have any ideas?
Thanks.