louboutin replica

Static light scattering is an established method for the absolute determination of the weight average molar mass (Mw) of a polymer. The measurement is carried out without separation of the polymer solution in a light scattering detector cell. The measured quantity is the intensity of the scattered light (Excess-Rayleigh scattering), which is proportional to the average molecular size of the dissolved substance.


A series of measurements is performed with different concentrations (c) at various scattering angles (theta). The molecular weight average Mw is determined with by plotting the data and extrapolation of c and theta to zero (Zimm-plot). Other parameters derived from the Zimm-plot are the z-average of the radius of gyration and the second virial coefficient A2. One requirement is the knowledge of the refractive index increment (dn/dc) of the polymer in the solvent used.

Results provided to the client:

  • absolute molecular weight average Mw
  • radius of gyration z-average
  • second virial coefficient A2

Request quote for sample testing

Customers from USA and Canada can use the online store and pay with credit card:

If contact form does not appear below, click here..
HTML Forms powered by Wufoo

Latest News

  • PSS Live Webinars +

    Compliant GPC/SEC/IPC and Traceable Results Data security and data integrity are critical aspects for chromatography software users. Understandingthe basic principles Read More
  • New PSS e-book Series +

    Part 1: GPC/SEC Theory and Background Contact us to receive a free copy of PSS e-book Series part 1: GPC/SEC Read More
  • PSS Webcasts (on-demand) +

    PSS Webcasts (on-demand) Duration: 60 minutes, Q&A session included GPC/SEC/GFC Basics This webinar is designed for beginners and scientists who Read More
  • Introducing our new Online Store +

    We are pleased to announce that we will be launching our NEW and IMPROVED PSS online store on November 2nd . You Read More

    October 2-5, 2017 New Orleans, Louisiana The International Symposium on GPC/SEC and Related Techniques is designed for users from all backgrounds Read More
  • 1