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- Posts: 6
- Joined: Thu Sep 06, 2007 7:26 pm
Dear all,
I am working on liphophilic NCE validation, initially i was facing problem of cayyover;on later that problem was solved rightnow i am facing problem of 10 times drop in the response after completion of 10 to 15 injections in LC-MS/MS the same drop in response i have observed in internal standard;
i am using 3mM ammonium acetate buffer with acn as a mobile phase,with thermo C18 hypurity colum, can any one will guide me to overcome the problem.
Regards,
Sadanand Mallurwar,
Research Associate
DMPK
Lupin Research Park
Pune
I am working on liphophilic NCE validation, initially i was facing problem of cayyover;on later that problem was solved rightnow i am facing problem of 10 times drop in the response after completion of 10 to 15 injections in LC-MS/MS the same drop in response i have observed in internal standard;
i am using 3mM ammonium acetate buffer with acn as a mobile phase,with thermo C18 hypurity colum, can any one will guide me to overcome the problem.
Regards,
Sadanand Mallurwar,
Research Associate
DMPK
Lupin Research Park
Pune
