I have observed an ongoing issue with our 1260 Quant Pump.
Short info on 1260 Quant Pump:
- New MCGV-unit one month old.
- New seal heads in pump in february.
Issue: Over an analysis sequence of +20 hours, we observe an issue with pump pressure baseline of method. No observed airbubbles in the system.
Solvent A: Water + formic acid, Solvent B: Acetonitrile: C and D cleaning solvents for column and system used after analysis (flow flowrate).
Red line: After 24+ of operation. Any idea, when the MCGV is relativly new? Purging and break resolves the issue, until +20 in a new sequence.