I need to separate creatine and ornithine and am considering either a HILAC or AQ column. Does anyone have experience with either of these (or maybe something else) and could you let me know what worked for you.
Please check at Dionex web site for Applicatin note 150. It has a separatin of a lot of amin acids that you may use it. You may check Agilent Cat 2005-2006 page 640 for LC separation of amino acid.