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Polymer Standard Kits

Polymer Standard Kits

GPC Polymer Standards

Various polymer standards can be used to calibrate GPC systems to provide an analyte’s molecular weight profile. In conventional GPC analysis, a series of 8 – 15 narrow-dispersity (Đ) polymer standards of one type are injected to produce a calibration curve. The elution time of an unknown polymer will be compared to the standard curve, and a Mw is calculated.  Examples include polystyrene (PS), polyethylene glycol (PEG), poly methyl methacrylate) (PMMA), and dextran.

In triple detection, one narrow polymer standard is injected to calibrate the light-scattering detector itself, followed by a broad polymer standard to confirm the accuracy of the detector. For example, in THF, a narrow PS 99 kDa is first injected for calibration, followed by a broad-dispersity 135 kDa PS standard as an accuracy check.

Our sales staff are happy to help determine which polymer standards are best for you. Please contact us for more information.

It is important to ensure polymer standards are > 99% pure, and possess the Mp, Mw, and Đ values claimed in the certificate of analysis. All narrow polymer standards should have a Đ nearing 1.00, such as 1.02 or 1.05.

Organic Solvent Methods Kits
  • PS
  • PMMA
Water Methods Kits
  • Pullulan