By Anonymous on Tuesday, June 25, 2002 - 05:24 am:
I would like to know what additional validation (if any) is necessary if I add a guard column to my system after the initial HPLC method validation is complete. Is there a literature reference for this?
By Anonymous on Tuesday, June 25, 2002 - 09:14 am:
If the packing material is the same particle, probably falls within reasonable guidelines for column length variations. Write a memo to your cGMP file.
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