Molecular Weight Standards, GPC/SEC Calibration Kits and Validation Standards

PSS supplies certified standards that meet the requirements of DIN 55672 and ISO/EN 13885. All reference materials are characterized with GPC/SEC to obtain molecular weight values. These values are subsequently confirmed by alternative methods such as Laser Light Scattering, Viscometry, MALDI-ToF, VPO and NMR.

Each product comes with a Certificate of Analysis, which provides the characterization information, the testing parameters, the molecular weight values (Mn, Mw, Mp, PDI) and the chromatogram. Calibration kits include a calibration report.

Products Sorted by Type - Click on the Material to open the Product List

  • Aqueous Mobile Phase
  • Organic Mobile Phase
  • Specialties

Aqueous Mobile Phase

Product Download

Material safety data sheet: SDS

Hydroxyethyl starch

Material safety data sheet: SDS

Poly(acrylic acid) sodium salt

Material safety data sheet: SDS


Material safety data sheet: SDS

Poly(ethylene glycol)

Material safety data sheet: SDS

Poly(ethylene oxide)

Material safety data sheet: SDS

Poly(methacrylic acid) sodium salt

Material safety data sheet: SDS

Poly(styrene sulfonate) sodium salt

Material safety data sheet: SDS

Poly(vinyl alcohol) broad

Material safety data sheet: SDS

Poly(2-vinylpyridinium bromide)

Material safety data sheet: SDS


Material safety data sheet: SDS


Material safety data sheet: SDS

Poly(2-vinyl pyridine) aqu

Material safety data sheet: SDS

Poly(vinyl pyrrolidone) broad

Material safety data sheet: SDS

Poly(alpha-methylstyrene sulfonate) sodium salt

Material safety data sheet: SDS

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Poly(methyl methacrylate)
Order No. Details Nominal MW Description PDI Packsize
PSS-mmkith Kit Poly(methyl methacrylate) high, 12 x 0.5 g, Mp 602 - 3 060 000 Da
PSS-mmkitl Kit Poly(methyl methacrylate) low, 8 x 0.5 g, Mp 102 - 62 200 Da
PSS-MM102 picture_as_pdf 102 Poly(methyl methacrylate) =1,00 1000,00
PSS-MM202 picture_as_pdf 202 Poly(methyl methacrylate) =1,00 1000,00
PSS-MM302 picture_as_pdf 302 Poly(methyl methacrylate) =1,00 1000,00
PSS-MM402 picture_as_pdf 402 Poly(methyl methacrylate) =1,00 1000,00
PSS-MM600 picture_as_pdf 600 Poly(methyl methacrylate) <1,50 1000,00
PSS-MM800 picture_as_pdf 800 Poly(methyl methacrylate) <1,50 1000,00
PSS-MM1K picture_as_pdf 1000 Poly(methyl methacrylate) <1,50 1000,00
PSS-MM1.2K picture_as_pdf 1200 Poly(methyl methacrylate) <1,50 1000,00
PSS-MM2.1K picture_as_pdf 2100 Poly(methyl methacrylate) <1,25 1000,00
PSS-MM2.5K picture_as_pdf 2500 Poly(methyl methacrylate) <1,15 1000,00
PSS-MM3.5K picture_as_pdf 3500 Poly(methyl methacrylate) <1,15 1000,00
PSS-MM4K picture_as_pdf 4000 Poly(methyl methacrylate) <1,15 1000,00
PSS-MM4.7K picture_as_pdf 4700 Poly(methyl methacrylate) <1,15 1000,00
PSS-MM10K picture_as_pdf 10000 Poly(methyl methacrylate) <1,15 1000,00
PSS-MM12.5K picture_as_pdf 12500 Poly(methyl methacrylate) <1,15 1000,00
PSS-MM14K picture_as_pdf 14000 Poly(methyl methacrylate) <1,15 1000,00
PSS-MM17K picture_as_pdf 17000 Poly(methyl methacrylate) <1,15 1000,00
PSS-MM21K picture_as_pdf 21000 Poly(methyl methacrylate) <1,15 1000,00
PSS-MM40K picture_as_pdf 40000 Poly(methyl methacrylate) <1,15 1000,00
PSS-MM47K picture_as_pdf 47000 Poly(methyl methacrylate) <1,15 1000,00
PSS-MM55K picture_as_pdf 55000 Poly(methyl methacrylate) <1,15 1000,00
PSS-MM65K picture_as_pdf 65000 Poly(methyl methacrylate) <1,15 1000,00
PSS-MM70K picture_as_pdf 70000 Poly(methyl methacrylate) <1,15 1000,00
PSS-MM85K picture_as_pdf 85000 Poly(methyl methacrylate) <1,15 1000,00
PSS-MM100K picture_as_pdf 100000 Poly(methyl methacrylate) <1,15 1000,00
PSS-MM150K picture_as_pdf 150000 Poly(methyl methacrylate) <1,15 1000,00
PSS-MM170K picture_as_pdf 170000 Poly(methyl methacrylate) <1,15 1000,00
PSS-MM190K picture_as_pdf 190000 Poly(methyl methacrylate) <1,15 1000,00
PSS-MM210K picture_as_pdf 210000 Poly(methyl methacrylate) <1,15 1000,00
PSS-MM320K picture_as_pdf 320000 Poly(methyl methacrylate) <1,15 1000,00
PSS-MM340K picture_as_pdf 340000 Poly(methyl methacrylate) <1,15 1000,00
PSS-MM380K picture_as_pdf 380000 Poly(methyl methacrylate) <1,15 1000,00
PSS-MM470K picture_as_pdf 470000 Poly(methyl methacrylate) <1,15 1000,00
PSS-MM615K picture_as_pdf 615000 Poly(methyl methacrylate) <1,15 1000,00
PSS-MM850K picture_as_pdf 850000 Poly(methyl methacrylate) <1,15 1000,00
PSS-MM1M picture_as_pdf 1000000 Poly(methyl methacrylate) <1,15 1000,00
PSS-MM2M picture_as_pdf 2000000 Poly(methyl methacrylate) <1,50 1000,00
PSS-MM3M picture_as_pdf 3000000 Poly(methyl methacrylate) <1,50 1000,00
PSS-MMB20K picture_as_pdf 20000 Poly(methyl methacrylate) broad >1,50 1000,00
PSS-MMB60K picture_as_pdf 60000 Poly(methyl methacrylate) broad >1,50 1000,00
PSS-MMB100K picture_as_pdf 100000 Poly(methyl methacrylate) broad >1,50 1000,00
PSS-MMB250K picture_as_pdf 250000 Poly(methyl methacrylate) broad >1,50 1000,00
PSS-MMB2.2M picture_as_pdf 2200000 Poly(methyl methacrylate) broad >1,50 1000,00
PSS-MM270 picture_as_pdf 270 Poly(methyl methacrylate) cycl. P3 =1,00 1000,00
PSS-mmkitr1l ReadyCal-Kit Poly(methyl methacrylate) low, 3 x 10 Vials-1.5ml, Mp 202 - 71 800 Da
PSS-mmkitr1 ReadyCal-Kit Poly(methyl methacrylate), 3 x 10 Vials-1.5ml, Mp 596 - 2 050 000 Da
PSS-mmkitr4 ReadyCal-Kit Poly(methyl methacrylate), 3 x 10 Vials-4.0ml, Mp 800 - 2 200 000 Da
PSS-mmkitv Visco/LS-Kit Poly(methyl methacrylate), 4 x 0.5g, Mp 8 200 - 903 000 Da


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Random copolymers

A selection of random copolymers with different compositions.

Block copolymers

A large selection of block copolymers with different chemistries and compositions.

Deuterated polymers

A selection of deuterated polymers. Material safety data sheet: SDS

Functionalized polymers

Reference materials with specific end groups or without initiator. Material safety data sheet: SDS

Star polymers

A selection of star branched polymers with 3 arms.

Polydispersity Index, PDI

The Polydispersity Index, PDI, is a measure of the width of the molar mass distribution. It is defined as ratio of the weight average molar mass Mw and the number average molar mass Mn, PDI =Mw/Mn.

PDI is 1 for monodisperse substances (no molar mass distribution), it is larger than 1 for the vast majority of all macromolecules. The PDI depends on the polymerization technique applied to produce the material. In praxis the PDI can be very large up to values of 100 and above. Narrow PDIs can only be obtained using controlled/living polymerization techniques.

Please refer to the literature section to learn more.

  • Narrow Standards
  • Broad Standards

Narrow polymer standards are made by controlled/living polymerization techniques (living anionic/cationic, ATRP, RAFT, etc.) or by fractionation of very broad standards.

All narrow standards have small polydispersity indices and exhibit a sharp and slim chromatographic profile.

The Mp value (molar mass at the peak maximum) is well defined and independent on the column resolution. As Mp is the only clearly defined point in the chromatogram this value is used to establish GPC/SEC calibration curves.

Standards with a narrow molar mass distribution are used:

  • to construct a GPC/SEC calibration curve using the provided Mp values
  • for the validation of a chromatographic system
  • for the determining of physical constants

Broad reference materials are made by radical polymerization, polycondensation or coordinative polymerization (polyolefins).

The PDI of broad standards is usually > 1.5. For broad standards the Mp value is a function of the column resolution. Molar mass values provided for broad standards are thus only the average molar masses Mw and Mn.

Modern GPC/SEC software packages allow for the construction of a calibration curve by the use of Mw, Mn or the intrinsic viscosity [η] of broad standards.

Standards with a broad molar mass distribution are used:

  • to validate a chromatographic system
  • to determine physical constants such as the Mark-Houwink constants K and ∝
  • to construct a calibration curve using broad calibration options
  • to test for porosity mismatch
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