Polymer Standards

Molecular Weight Markers

Since 1964 Pressure Chemical Company has been supplying a broad range of polymer standards for gel permeation chromatography (GPC) including polystyrene standards, polyethylene fractions and several specialty polymers and molecular weight markers.

Our offerings of narrow molecular weight polymer standards have been characterized for number, weight and viscosity average molecular weights, by gel permeation chromatography (GPC, light scattering) and nuclear magnetic resonance spectroscopy (NMR), where applicable.

Polyethylene Glycol
CAS #25322-68-3

Catalog Number MW MW/MN
PEG200 229 1.11
PEG300 331 1.08
PEG400 445 1.07
PEG600 629 1.10
PEG1000 1,030 1.05
PEG1450 1,489 1.05
PEG3600 3,662 1.10
PEG5000 5,160 1.04
PEG11000 10,890 1.19
PEG14000 19,683 1.34

Polyethylene
CAS #9002-88-4

Catalog Number MW MW/MN
PE540 540 1.09
PE1110 1,110 1.20
PE2100 2,100 1.15
PE7AF 35,700 4.22
PE8AC 41,700 3.70

Polystyrene
CAS#9003-53-6

Catalog Number MW MW/MN
PS40627 1,300 1.06
PS90227 1,750 1.06
PS50110 2,032 1.06
PS12C 2,200 1.06
PS61223 2,500 1.09
PS 61213 3,350 1.06
PS30525 4,000 1.06
PS50828 5,780 1.05
PS 30420 12,502 <1.06
PS30811 25,000 1.06
PS80317 30,000 1.06
PS7B 37,000 1.07
PS30908 50,000 1.06
PS61210 65,000 1.06
PS40915 123,000 1.06
PS30126 170,000 1.06
PS70114 290,000 1.06
PS61120 650,000 1.06
PS6B 700,000 1.26
PS80323 900,000 1.10
PS61111 2,000,000 1.30