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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)
[Polyctyrene(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 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 (Mw/Mn and Mp) may vary depending on production lots even in the same type of Shodex STANDARD.
[Polymethylmethacrylate(PMMA)]
| M-75 |
· For organic SEC(GPC)
· Narrow molecular weight range
· Soluble in hexafluoroisopropanol(HFIP) and dimethylformamide(DMF) |
| 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 (Mw/Mn and Mp) may vary depending on production lots even in the same type of Shodex STANDARD.
Calibration Standards for Aqueous SEC(GFC)
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 Organic SEC(GPC)
[Pullulan]
| P series |
· For aqueous SEC(GFC)
· Has no side chains
· High solubility in water eliminates the possibility of recrystallization |
[Structure formula of P series]
(Kit type)
| Product name |
Contents |
MW range |
| STANDARD P-82 |
0.2g x 8 kinds |
5,000 to 800,000(P-5 to P-800) |
(Single type) STD P series
| Product name |
Mw(Nominal) |
Contents |
New STD P-2500
STD P-1600
STD P-800
STD P-400
STD P-200
STD P-100
STD P-50
STD P-20
STD P-10
STD P-5
STD P-3
STD P-2
STD P-1 |
2,500,000
1,600,000
800,000
400,000
200,000
100,000
50,000
20,000
10,000
5,000
3,000
2,000
1,500 |
0.2g
0.2g
0.5g
0.5g
0.5g
0.5g
0.5g
0.5g
0.5g
0.5g
0.2g
0.2g
0.2g |
Note: Molecular weights (Mw, Mw/Mn and Mp) may vary depending on production lots even in the same type of Shodex STANDARD.
For flere detaljer og pris, kontakt venligst MD Scientific via e-mail: info@md-scientific.dk eller telefon: 7027 8565.
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