by
thohry » Thu Apr 16, 2015 12:17 pm
Markus Laeubli, Metrohm wrote:
3 mmol/L MSA should still be below 1000 µS/cm.
Water with 130 µS/cm I call dirty. Ultrapure water should read 0.05 µS/cm or (with dissolved CO2 from the air) at least below 1 µS/cm.
Is there the possibility to adjust the cell constant of the the detector? If yes, you might lower that value. The set value might be by far too high.
Thanks for your precious comment. I have check the water purification system, they did not replace the cell quite a long time ! Dirty water is the culprit.
It seems there's no way to adjust the detector. It saturates at about 1900 uS/cm
Anyway, to get the peaks out, I have increased the flowrate to 2.5 and it works. Just temporarily because I think the water may contaminate the column !
I have to get the cell be replaced as soon as possible.
Thank you very much Markus
Thohry