Columns for Column Switching Method

Pretreatment columns for column switching enable online concentration of trace substances and online removal of high-molecular-weight foreign substances (e.g. proteins). The use of this type of column is recommended when analyzing chemical substances/metabolites contained in biological fluids.

PK · Traps both hydrophilic and hydrophobic substances at a high removal rate
· Remove proteins
GF/GS · Higher protein removal rate than PK columns
*GF/GS columns remove proteins well but are not suitable for trapping hydrophilic substances. Use the PK columns for this purpose.
ODP-51 · Supports a wide pH range (pH2 to12) than ODS-based pretreatment columns
SP-80 · For trapping cationic chemical substances

(Cartridge columns and holder for column switching method)
Product name
Particle size
(micron)
Size(mm)
ID x Length
Shipping solvent
pcs/ box
MSpak PK-2A 2p
MSpak PK-2A 5p
MSpak PK-4A 2p
MSpak PK-4A 5p
MSpak HLD

30
30
30
30
-

 2.0 x 10
2.0 x 10
4.0 x 10
4.0 x 10
Holder for PK
H2O
H2O
H2O
H2O
-

2
5
2
5
1
Base material : Hydrophilic copolymers containing N-vinyl acetoamide

(Columns for column switching method)
Product name Plate number
(TPN/column)		 Particle size
(micron)		 Size(mm)
ID x Length		 Shipping solvent
MSpak GF-4A
MSpak GF-310 4B
MSpak GF-310 4D
MSpak GF-310 2D
-
> 3,000
> 10,000
> 5,500
 9
5
5
5
 4.6 x 10
4.6 x 50
4.6 x 150
2.0 x 150
H2O
H2O
H2O
H2O
MSpak GS-320 4B
MSpak GS-320 4D
MSpak GS-320 2D
> 2,000
> 7,000
> 4,000
 6
6
6
 4.6 x 50
4.6 x 150
2.0 x 150
H2O
H2O
H2O
Asahipak ODP-51 4B
> 2,000
 5
 4.6 x 50
CH3CN/H2O=65/35
MSpak SP-80 4B
> 800
 8
 4.6 x 50
 50mM Na2SO4 aq.