Polymer Analysis & SEC Resources

What's on this page?
Links to manufacturers of polymer standard & SEC columns, application notes and other resources on the web concerning polymer analysis. Enjoy!
Starting points
Tips: Calibration curve [1]
The calibration curve should cover the MW range of the polymer samples of interest. At least two calibration points must be measured per decade of MW and there must be at least five calibration points altogether.

If PS is used as the calibration standard, n-hexylbenzene (M=162) can be used as the standard with the lowest MW on the calibration curve, because most PS standards are manufactured by anionically initiated polymerization and have a n-butyl group at one end.

The concentrations of the PS standards should preferably be one-half of te sample concentration.

Characterization: Commercial LC-FTIR interfaces
Polymer Properties
Tips: Sample and Calibration concentrations [1]
As a rule of thumb, the concentration levels for samples and PS standards are presented in the table below. 
 Sample/Standard MW-range c
Sample (%(w/v))  > 10E6  ~0.05 
high MW < 0.1
low MW 0.1-0.2
PS standards (%(w/v))  > 10E6 <0.025
10E5-10E6 <0.05
<10E5 < 0.1
PS standards (expressed  > 10E6 1/8-1/10
as fraction of sample  5x10E5-10E6 1/4-1/5
concentration) <10E5 1/2
Polymer Standards, SEC Columns and Application notes
 Homepage Polymer standards Columns Application notes:
American Polymer Standards Corporation direct link direct link -
Capricon direct link -  
Labconnections - - direct link
Polymer Laboratories Ltd. direct link direct link  
Polymer Standard Service GmbH. no direct link no direct link  
Shodex   direct link direct link
Viscotek - - Viscotek
Waters    direct link (PDF wall chart) direct link
Wyatt Technologies - - direct link
Scientific Polymer Products Inc. (SP2) no direct link -  
1. S. Mori, H.G. Barth in 'Size Exclusion Chromatography', 1999, Springer, Berlin, Germany.
last update: augustus 11, 2007