Standards for GPC

The analysis of molecular-weight distribution of polymers using GPC and GFC columns requires the calibration curve development to obtain information on molecular weights of samples of interest. Shodex STANDARDs are standard samples for calibration curve development. Polystyrene and Poly(methylmethacrylate) for GPC with organic solvents, including HFIP, and pullulan for GFC are available, from which you can select the most suitable one for the purpose.

Note: In the same type of Shodex STANDARDs, molecular weights (Mw, Mw/Mn, and Mp) may be varied, depending on production lots.

STANDARD S series
Fully purified, low-branched polystyrene prepared by anion polymerization. This is easily soluble in tetrahydrofuran, chloroform, toluene and o-dichlorobenzene.

STANDARD M-75
Poly(methylmethacrylate) with a narrow molecular weight distribution. This is suitable for GPC analysis using HFIP eluent.

STANDARD SL-105 STANDARD SM-105 STANDARD SH-75
Std.No. Mp Mw/Mn Std.No. Mp Mw/Mn Std.No. Mp Mw/Mn
S-22.0
S-11.6
S-7.00
S-5.05
S-2.95
S-2.40
S-1.68
S-1.28
S-0.98
S-0.58
 21,900
11,600
6,990
5,050
2,960
2,400
1,680
1,280
980
580
 1.03
1.03
1.04
1.05
1.05
1.05
1.06
1.07
1.09
1.16		 S-3160
S-2400
S-1075
S-560
S-156
S-66.0
S-28.5
S-11.6
S-2.95
S-1.34
 3,157,000
2,399,000
1,075,000
561,000
157,000
66,000
28,500
11,600
2,960
1,340
 1.06
1.06
1.05
1.06
1.03
1.03
1.03
1.03
1.05
1.07		 S-7100
S-4010
S-2710
S-1950
S-1570
S-1130
S-652



 7,104,000
4,009,000
2,710,000
1,945,000
1,574,000
1,130,000
652,000



 1.11
1.06
1.05
1.04
1.06
1.04
1.04
(Structural formula of S series)


STANDARD M-75
Std.No. Mp Mw/Mn
M-1580
M-745
M-174
M-48.6
M-20.2
M-5.7
M-1.8
 1,577,000
685,000
154,000
48,600
17,000
5,270
1,680
 1.07
1.10
1.04
1.04
1.03
1.03
1.03

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