Shodex columns.jpg

GPC Clean-up columns

with acetone/cyclohexane or ethylacetate/cyclohexane

For fractionation of residual pesticides in food

Download the product overview (pdf)

Product information

 

MSpak GF-4A

  • Pretreatment column for column switching method

  • High protein removal rate

  • Removes surfactants well but is not suitable for trapping hydrophilic substances

CLNpak EV Series

  • GPC Clean-up columns

  • Suitable for fractionation of residual pesticides in foods

  • EV-2000 AC is used in Shoku-An No. 0124001 (January 24th, 2005, Japan) of the Pharmaceutical and Food Safety Bureau, MHLW, Section 2 “Simultaneous GC/MS (LC/MS) Analyses of Agricultural Chemicals in Livestock and Marine Products”.

  • EV2000AC-12F is used in Shoku-An No. 0226 (February 26th, 2015, Japan) of the Pharmaceutical and Food Safety Bureau, MHLW, Section 2 “LC/MS Analyses of Agricultural Chemicals in Livestock and Marine Products”.

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.

Product overview

Product code
Product name
Separation
Functional group
Gel material
Plates per column
Particle size
Pore size
Size (ID x length)
Housing material
F8700015
MSpak GF-4A
Clean-up
-
Polyvinyl alcohol
-
9 µm
400 Å
4.6 x 10 mm
steel
F6090005
CLNpak EV-200
Clean-up
-
Styrene divinylbenzene copolymer
≥ 500
16 µm
30 Å
2.0 x 150 mm
steel
F6090001
CLNpak EV-2000
Clean-up
-
Styrene divinylbenzene copolymer
≥ 4,000
16 µm
30 Å
20.0 x 300 mm
steel
F6090002
CLNpak EV-G
Clean-up
-
Styrene divinylbenzene copolymer
(guard)
16 µm
-
20.0 x 100 mm
steel
F6090006
CLNpak EV-2000AC-12F
Clean-up
-
Styrene divinylbenzene copolymer
-
16 µm
30 Å
12.0 x 300 mm
steel
F6090007
CLNpak EV-G AC12C
Clean-up
-
Styrene divinylbenzene copolymer
(guard)
16 µm
-
12.0 x 100 mm
steel
F6090003
CLNpak EV-2000 AC
Clean-up