HPLC: why I'm recording a different chromatogram (only ONE peak is bigger) if I'm injecting the same sample in a different but similar HPLC system?

Hello all, I have a strange behaviour of my HPLC system. I've found an unwaited intensity of a peak of an impurity in a chromatogram and I had to check if there was an instrument contamination or...

04 November 2021 3,946 3 View