This is an Application Brief and does not contain a detailed Experimental section.
This application brief demonstrates analysis of removal of PEG-400 from basic compound solution by SPE.
The method described in this application note allows for high retention of bases in acidified samples.
Wash #2 (methanol) will contain acids and neutrals retained by reversed-phase interaction. This fraction may be analyzed for those compounds if desired.
WA31764.139, June 2003