Features of RSpak DE Series (4) (Reproducibility between Production Lots)
The production of packing materials for RSpak 
DE-413 is 
done in single stage, and, that of ODS columns is done in two stages, production 
of base material and bonding of C18 group. The simple production process of DE 
series ensures good reproducibility between production lots. 
Sample : 5micro-L
1. 0.2% 
Methylethyl ketone 
2. 0.2% 
Diethyl ketone
3. 0.4% 
Di-n-propyl ketone
4. 0.6% 
Di-n-butyl ketone
Column       : Shodex RSpak DE-413 (4.6mmID*150mm)
Eluent       : CH3CN/H2O=50/50
Flow rate    : 1.0mL/min
Detector     : UV(262nm)
Column temp. : 40deg-C