GPC Clean-up Column, CLNpak EV-2000 Series

Recently, the analysis of pesticides residues in many types of foods have become more important because of the increasing demand from EPA regulatory agencies.
The GPC (Gel Permeation Chromatography) clean-up method is widely used to remove lipids, polymers, pigments and other high molecular weight compounds from a wide range of sample matrices including food, tissues, grains, plants and environmental samples. Using this method combined with GC/MS, GC or HPLC, it is possible to detect many pesticides residues with good reproducibility in a relatively short period of time.
Dichloromethane has been used as an eluent for GPC clean-up, but as it may itself cause environmental pollution. To overcome this, the possibility of using a non-halogenated solvent such as ethyl acetate/cyclohexane as eluent was tested recently, but compared with dichloromethane the separation efficiency was inferior.
CLNpak EV-2000 series for GPC clean-up is developed to be used with non-halogenated solvents such as ethyl acetate/cyclohexane as the eluent. Using such solvents, EV-2000 series can obtain almost the same results when dichloromethane is used. This is the unique feature of EV-2000 series.