Why are our D7419 peaks eluting later and later?

We are currently running ASTM D7419 on 2 x Agilent ZORBAX SIL 9.4 x 250 mm, 5 μm, Part number: 880952-201 1 x Agilent ZORBAX CN 9.4 x 250 mm, 5 μm, B12246 and with every run we are seeing the...

30 June 2020 6,527 0 View