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- Posts: 17
- Joined: Wed Nov 08, 2017 10:49 pm
I’ve just found out the delay between my MS and UV signals in a daisy-chained LC/MS is not fixed even though the flow is isocratic (iso pump, neat MeOH). This is a flow injection analysis by the way, no column.
I’m strugling to understand how this is at all possible.
The run is very long, about 2h and the delay is about 0.015min at the begining and goes above 0.1min (7x longer) after 2h. Fairly reproducible from run to run.
There are no splits, just a straight line. Empower software, acquity kit.
I’m flow-injecting every several seconds into a continuous run.
I’m considering some weird temperature effects or software issues with time-stamping as the file file grows, but quite frankly finding it very odd.
Any comments on that?
Cheers