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- Posts: 3
- Joined: Thu Jul 11, 2013 2:38 pm
The second image shows the difference at different flow rates where the time delta between peaks is very similar (~0.14 min).
The mass spectra of these peaks are showing a primary peak at 32 with a second peak at 40 (both show spikes in their respective EICs).
I've tightened all connections and "baked out" MS. The air/water check in the MS is all fine (H2O: 1.2%; O2: 1.0%; N2: 3.3%)
Has anyone encountered this before?
Different flow rates (0.8 & 1.2 mL/min)