Separation of sugars on Primesep S column

July 2009 Newsletter HPLC Columns for Simultaneous Analysis of Counter-Ions SIELC Technologies, Inc., Prospect Heights, IL 60070 Majority of the drugs are produced in a salt form. The counter ions in drugs can be inorganic and organic, acidic or basic.…

May 2010 Newsletter Easy HPLC Method Development Sometimes method development in chromatography can be a challenging and time consuming task. Screening multiple columns and different mobile phases is frustrating, in many cases requiring purchases of different columns. And what happens…

Retention of Taurine SIELC Technologies, Inc. 15 E. Palatine Rd. Suite 107, Prospect Heights, IL 60070. Ph 847/229-2629, Fax 847/655-6079, [email protected] Taurine is zwitterionic molecule which posses no charge to be retained by ion-exchange mechanism. The molecule is very polar…

August 2009 Newsletter The Do’s and Don’ts of Method Development in Mixed-Mode Chromatography Part 1. Reversed-Phase Ion-Exchange Columns SIELC Technologies, Inc., Prospect Heights, IL 60070 If a reversed-phase chromatography column does not work for your separation, it is most likely…