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Does Infinity II UPLC pumps need special check valves for normal phase applications?

Question asked by yinho5 on Nov 27, 2019
Latest reply on Nov 28, 2019 by kbusch

We have Inifnity II UPLC system. We switch between normal phases and reversed phases applications.  Do we need to change to normal phase compatible check valves?  Are there check valves resistant to both normal phases solvent as well as typical reverse phase solvents?