Re: Ghost peaks with same intensity in every injection
Posted: Tue Jan 02, 2018 3:41 pm
by Mike H.
I was going to suggest using fresh MP bottles before the extensive troubleshooting. I've found this to be the cause of the majority of my ghost peak problems.
Re: Ghost peaks with same intensity in every injection
Posted: Wed Jul 25, 2018 12:12 pm
by Ken99
Hi all, hope someone can kindly advise me ~
I did passivation as per what was done earlier by a member here and I have narrowed down the ghost peaks to a problematic water source.
Using other source of ultra pure water from another lab, I managed to get neat blanks without any carry over peaks.
Our lab purchased a new UPW system recently from Millipore, and to my horror, the ghost peaks re-appeared again with the same intensity in every injection.
I was thinking that the water source in my lab was contaminated; but is it even possible that can happen with a new ultra pure water system?
Looking for some kind wisdom and help here.
Thanks a lot !