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- Posts: 9
- Joined: Thu Oct 26, 2017 10:49 pm
- Location: Santa Fe, NM
After changing the column filter, column and a piece of metal tubing that goes from the heater to the column, I am still seeing this retention time shift. I have taken a couple metal tubing pieces apart and re-connected them. Still nothing.
THCA was coming out just under 6 minutes and is now coming out at around 6.50. The pressure seems to be fine as it is resting at the same bar that it was at when functioning correctly. I am baffled because usually there is a correlation between the pressure and the retention time shift. This time everything looks to be running the same as before. What else could it be?