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By dirk on Wednesday, June 9, 2004 - 02:19 am:
We face most recently some severe challenges with Waters XTerra columns. Bad perfomance and bad batch to batch reproducibility. Did someone make a similar experience and wishes to comment?
Thanx
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By Anonymous on Wednesday, June 9, 2004 - 05:40 pm:
I had three XTerra columns from three diferent lots and all of them showed different retention time for my parent compound (the difference was over 15% and I started with brand new columns). What is going on? is it my compound or what. I always equlibrated the columns for at least 30 minutes and did multiple injections).
We face most recently some severe challenges with Waters XTerra columns. Bad perfomance and bad batch to batch reproducibility. Did someone make a similar experience and wishes to comment?
Thanx
-------------------------------------------------------------------------------------------------------
By Anonymous on Wednesday, June 9, 2004 - 05:40 pm:
I had three XTerra columns from three diferent lots and all of them showed different retention time for my parent compound (the difference was over 15% and I started with brand new columns). What is going on? is it my compound or what. I always equlibrated the columns for at least 30 minutes and did multiple injections).
