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 / Particle Standards

Aqueous Mobile Phase

Product Download
Dextran

Material safety data sheet: SDS

Hydroxyethyl starch

Material safety data sheet: SDS

Poly(acrylic acid) sodium salt

Material safety data sheet: SDS

Poly(DADMAC)

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

Pullulan

Material safety data sheet: SDS

Protein

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

˂ Back to List
Poly(styrene)
Order No. Details Nominal MW Description PDI Packsize
PSS-eps80k picture_as_pdf 79600 European Reference Materials Poly(styrene) 1,08 1000,00
PSS-epsb180k picture_as_pdf 181200 European Reference Materials Poly(styrene) broad 2,26 1000,00
PSS-pskith picture_as_pdf Kit Poly(styrene) high, 12 x 1.0 g, Mp 682 - 2 520 000 Da
PSS-pskitl picture_as_pdf Kit Poly(styrene) low, 8 x 1.0 g, Mp 162 - 61 400 Da
PSS-pskitml picture_as_pdf Kit Poly(styrene) mediumlow, 12 x 1.0 g, Mp 162 - 851 000 Da
PSS-pskitm picture_as_pdf MALDI Validation Kit Poly(styrene), 6 x 0.5 g, Mp 682 - 67 500 Da
PSS-ps162 picture_as_pdf 162 Poly(styrene) 1 1000,00
PSS-ps266 picture_as_pdf 266 Poly(styrene) =1 1000,00
PSS-ps360 picture_as_pdf 360 Poly(styrene) <1,50 1000,00
PSS-ps370 picture_as_pdf 370 Poly(styrene) 1 1000,00
PSS-ps560 picture_as_pdf 560 Poly(styrene) <1,50 1000,00
PSS-ps750 picture_as_pdf 750 Poly(styrene) <1,50 1000,00
PSS-ps890 picture_as_pdf 890 Poly(styrene) <1,50 1000,00
PSS-ps1k picture_as_pdf 1000 Poly(styrene) <1,50 1000,00
PSS-ps1.2k picture_as_pdf 1200 Poly(styrene) <1,50 1000,00
PSS-ps1.4k picture_as_pdf 1400 Poly(styrene) <1,50 1000,00
PSS-ps1.8k picture_as_pdf 1800 Poly(styrene) <1,15 1000,00
PSS-ps2.1k picture_as_pdf 2100 Poly(styrene) <1,15 1000,00
PSS-ps3.2k picture_as_pdf 3200 Poly(styrene) <1,15 1000,00
PSS-ps4k picture_as_pdf 4000 Poly(styrene) <1,15 1000,00
PSS-ps4.5k picture_as_pdf 4500 Poly(styrene) <1,15 1000,00
PSS-ps5.6k picture_as_pdf 5600 Poly(styrene) <1,15 1000,00
PSS-ps9k picture_as_pdf 9000 Poly(styrene) <1,15 1000,00
PSS-ps10k picture_as_pdf 10000 Poly(styrene) <1,15 1000,00
PSS-ps12k picture_as_pdf 12000 Poly(styrene) <1,15 1000,00
PSS-ps18k picture_as_pdf 18000 Poly(styrene) <1,15 1000,00
PSS-ps33k picture_as_pdf 33000 Poly(styrene) <1,15 1000,00
PSS-ps56k picture_as_pdf 56000 Poly(styrene) <1,15 1000,00
PSS-ps62k picture_as_pdf 62000 Poly(styrene) <1,15 1000,00
PSS-ps100k picture_as_pdf 100000 Poly(styrene) <1,15 1000,00
PSS-ps120k picture_as_pdf 120000 Poly(styrene) <1,15 1000,00
PSS-ps136k picture_as_pdf 136000 Poly(styrene) <1,15 1000,00
PSS-ps180k picture_as_pdf 180000 Poly(styrene) <1,15 1000,00
PSS-ps200k picture_as_pdf 200000 Poly(styrene) <1,15 1000,00
PSS-ps238k picture_as_pdf 238000 Poly(styrene) <1,15 1000,00
PSS-ps320k picture_as_pdf 320000 Poly(styrene) <1,15 1000,00
PSS-ps560k picture_as_pdf 560000 Poly(styrene) <1,15 1000,00
PSS-ps800k picture_as_pdf 800000 Poly(styrene) <1,15 1000,00
PSS-ps900k picture_as_pdf 900000 Poly(styrene) <1,15 1000,00
PSS-ps1m picture_as_pdf 1000000 Poly(styrene) <1,50 1000,00
PSS-ps1.4m picture_as_pdf 1400000 Poly(styrene) <1,50 1000,00
PSS-ps1.5m picture_as_pdf 1500000 Poly(styrene) <1,50 1000,00
PSS-ps1.8m picture_as_pdf 1800000 Poly(styrene) <1,50 1000,00
PSS-ps2.5m picture_as_pdf 2500000 Poly(styrene) <1,50 1000,00
PSS-ps3.2m picture_as_pdf 3200000 Poly(styrene) <1,50 1000,00
PSS-ps5m picture_as_pdf 5000000 Poly(styrene) <1,50 1000,00
PSS-ps6.5m picture_as_pdf 6500000 Poly(styrene) <1,50 1000,00
PSS-ps10m picture_as_pdf 10000000 Poly(styrene) <1,50 1000,00
PSS-ps15m picture_as_pdf 15000000 Poly(styrene) <1,50 1000,00
PSS-psb4k picture_as_pdf 4000 Poly(styrene) broad >1,50 1000,00
PSS-psb7k picture_as_pdf 7000 Poly(styrene) broad >1,50 1000,00
PSS-psb25k picture_as_pdf 25000 Poly(styrene) broad >1,50 1000,00
PSS-psb45k picture_as_pdf 45000 Poly(styrene) broad >1,50 1000,00
PSS-psb60k picture_as_pdf 60000 Poly(styrene) broad >1,50 1000,00
PSS-psb100k picture_as_pdf 100000 Poly(styrene) broad >1,50 1000,00
PSS-psb145k picture_as_pdf 145000 Poly(styrene) broad >1,50 1000,00
PSS-psb200k picture_as_pdf 200000 Poly(styrene) broad >1,50 1000,00
PSS-psb250k picture_as_pdf 250000 Poly(styrene) broad >1,50 1000,00
PSS-psb310k picture_as_pdf 310000 Poly(styrene) broad >1,50 1000,00
PSS-psb350k picture_as_pdf 350000 Poly(styrene) broad >1,50 1000,00
PSS-psb400k picture_as_pdf 400000 Poly(styrene) broad >1,50 1000,00
PSS-psb450k picture_as_pdf 450000 Poly(styrene) broad >1,50 1000,00
PSS-psb550k picture_as_pdf 550000 Poly(styrene) broad >1,50 1000,00
PSS-psb700k picture_as_pdf 700000 Poly(styrene) broad >1,50 1000,00
PSS-pskitr1ht picture_as_pdf ReadyCal-Kit Poly(styrene) for HT GPC, 3 x 10 Vials-1.5ml, Mp 370 - 2 520 000 Da
PSS-pskitr10ht picture_as_pdf ReadyCal-Kit Poly(styrene) for HT GPC, 4 x 5 Vials-10ml, Mp 266 - 12 200 000 Da
PSS-pskitr1h picture_as_pdf ReadyCal-Kit Poly(styrene) high, 3 x 10 Vials-1.5ml, Mp 1 620 - 7 520 000 Da
PSS-pskitr4h picture_as_pdf ReadyCal-Kit Poly(styrene) high, 3 x 10 Vials-4.0ml, Mp 1 620 - 7 520 000 Da
PSS-pskitr1l picture_as_pdf ReadyCal-Kit Poly(styrene) low, 3 x 10 Vials-1.5ml, Mp 266 - 66 000 Da
PSS-pskitr1l ReadyCal-Kit Poly(styrene) low, 3 x 10 Vials-1.5ml, Mp 266 - 66 000 Da
PSS-pskitr4l picture_as_pdf ReadyCal-Kit Poly(styrene) low, 3 x 10 Vials-4.0ml, Mp 266 - 66 000 Da
PSS-pskitr1 picture_as_pdf ReadyCal-Kit Poly(styrene), 3 x 10 Vials-1.5ml, Mp 370 - 2 520 000 Da
PSS-pskitr4 picture_as_pdf ReadyCal-Kit Poly(styrene), 3 x 10 Vials-4.0ml, Mp 370 - 2 520 000 Da
PSS-vlskitr1psb10 picture_as_pdf ReadyVLS-Kit, Poly(styrene) broad, 10 Vials-1.5ml
PSS-vlskitr1ps10 picture_as_pdf ReadyVLS-Kit, Poly(styrene) narrow, 10 Vials-1.5ml
PSS-vlskitr1ps20 picture_as_pdf ReadyVLS-Kit, Poly(styrene), 2 x 10 Vials-1.5ml
PSS-psval picture_as_pdf Standardkit (organic), 6 x 5 Vials-1.5 ml, for EasyValid Validation Kit
PSS-pskitv picture_as_pdf Visco/LS-Kit Poly(styrene), 4 x 0.5 g, Mp 9 130 - 556 000 Da

Specialties / Particle Standards

Product Download
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.

Particle standards

Certified Particle Size Standards for particle sizing instruments  (Nanospheres and Microspheres), and Standards for particle counting instruments (EZY-CAL)

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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