Features of RSpak DE Series (3) (Effect of Eluent pH on Analysis Result)

RSpak DE series is stable in wide eluent pH range.

Sample : 10micro-L
1. Theobromine
2. Theophylline
3. Caffeine

Column       : Shodex RSpak DE-413 (4.6mmID*150mm) 
Eluent       : 10mM Sodium phosphate buffer/CH3CN=82/18
Flow rate    : 0.6mL/min 
Detector     : UV(254nm) 
Column temp. : 40deg-C