This is a common question we get asked in tech service, and although this is a better question for the instrument manufacturer, I will try and provide our blog readers some general information. First, let me define my definition of…

Acetonitrile injections don’t damage Rxi-5Sil MS GC columns. But urban legends persist, so analysts sometimes do unnecessary and laborious solvent exchanges for QuEChERS extracts. A real problem that might warrant solvent exchange is mismatch between the polar solvent acetonitrile and…