Calibration Standards for Organic SEC (GPC)

When size exclusion chromatography (GPC or GFC) is performed, it is necessary to make a calibration curve.
It is recommended that Shodex STANDARD be used to obtain the calibration curve. The molecular weight range of Shodex STANDARD are very narrow and molecular weights are measured accurately.
Please refer to Calibration Standards for Aqueous SEC (GFC)

[Polystyrene (PS)]
SL-105
SM-105
SH-75		 · For organic SEC (GPC)
· High linearity polystyrene with anionic polymerization
· Soluble in tetrahydrofuran (THF), chloroform, toluene, and o-dichlorobenzene

Product code Product name Contents MW range
STANDARD SL-105
0.5g x 10 kinds
500 to 22,000
STANDARD SM-105
0.5g x 10 kinds
1,200 to 3,800,000
STANDARD SH-75
0.5g x 7 kinds
590,000 to 7,500,000
SL-105 SM-105 SH-75
Std.No. Mp Mw/Mn Std.No. Mp Mw/Mn Std.No. Mp Mw/Mn
S-20
S-11
S-6.9
S-5.0
S-4.4
S-2.9
S-1.9
S-1.2
S-1.0
S-0.5
 19,800
10,700
6,930
5,030
4,430
2,900
1,930
1,200
1,050
580
 1.02
1.02
1.03
1.03
1.03
1.03
1.05
1.07
1.07
1.12		 S-3730
S-2480
S-1230
S-579
S-197
S-55.1
S-31.4
S-12.8
S-3.95
S-1.20
 3,730,000
2,480,000
1,230,000
579,000
197,000
55,100
31,400
12,800
3,950
1,200
 1.04
1.05
1.05
1.02
1.02
1.03
1.02
1.02
1.03
1.07		 S-7450
S-3790
S-3250
S-2220
S-1820
S-1060
S-591



 7,450,000
3,790,000
3,250,000
2,220,000
1,820,000
1,060,000
591,000



 1.07
1.05
1.04
1.03
1.04
1.03
1.03

[Structure formula of S series]

Note: Molecular weights (Mp, Mw/Mn) of each kit may vary depending on production lots.

[Polymethylmethacrylate (PMMA)]
M-75 · For organic SEC (GPC)
· Narrow molecular weight range
· Soluble in hexafluoroisopropanol (HFIP) and dimethylformamide (DMF)

Product code Product name Contents MW range
STANDARD M-75
0.5g x 7 kinds
1,800 to 950,000
M-75
Std.No. Mp Mw/Mn
M-949
M-451
M-139
M-53
M-21
M-7.1
M-1.9
 949,000
451,000
139,000
52,600
20,800
7,100
1,890
 1.05
1.02
1.05
1.02
1.03
1.08
1.10
Note: Molecular weights (Mp, Mw/Mn) of each kit may vary depending on production lots.