Shodex: Packed Columns for HPLC Analysis

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