louboutin replica

Conventional GPC/SEC is an excellent method for sample comparison and the determination of  molecular weight of a sample. Conventional GPC/SEC analysis yields the complete molar mass distribution (MMD) and is more informative than a method that only yields an average value (Mw or intrinsic viscosity). 

 

PSS offers testing in aqueous and organic mobile phases. Customer requests are usually honored. As a manufacturer of a great variety of polymer standards and of GPC/SEC/GFC columns, PSS is able to use the optimum conditions to characterize your samples. Before each measurement series, the  analytical system is validated and calibrated. An internal standard/flow marker is used to monitor the constant flow of the pump and for flow-correction as needed. Afterwards the molecular weight distribution is obtained from the elugram using the corresponding calibration curve.

Conventional Gel Permeation Chromatography by PSS USA


Calculation of the percentage of a given molar mass (eg. < 500 g/mol) from  the molecular weight distribution is usually requested for product approval in the USA and Canada. Additives and stabilizers can be separated  from the polymer and a quantitative determination of these compounds is possible. The analysis report lists all relevant parameters of the measurement and documents the sample preparation.  

 


Results provided to the client: 

  •   simple comparison of polymer samples 
  •   molecular weight distribution 
  •   molecular weight averages: Mw, Mn, Mz
  •   polydispersity index PDI/D
  •   percentage of mass, eg. < 500 g/mol 
  •   chemical composition

Request quote for sample testing

Customers from USA and Canada:

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
  • GPC/SEC SYMPOSIUM 2017 +

    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

catalogleft