Laboratory Testing » Analytical Techniques » Gel Permeation Chromatography (GPC)

Gel Permeation Chromatography (GPC)

GPC is a technique which is used to determine the molecular weight of sample components. Jordi Labs operates one of the most extensive GPC facilities in the country. We are capable of running in nearly any solvent and can provide rapid turnaround for most analyses. Jordi Labs produces a complete line of GPC columns providing us with unique expertise and access to a wide selection of column stationary phases. We can solve the GPC problems which others cannot.

Gel Permeation Chromatography, SEC, Size Exclusion

Detection methods available for GPC analysis include:

● Ultra Violet (UV)
● Evaporative Light Scattering (ELSD)
● Refractive Index (RI)
● Right Angle Light Scattering (RALS)
● Viscometry
● Low Angle Light Scattering (LALS)
● Fourier Transform Infrared Spectroscopy (FTIR)

Learn more about each GPC technique below:

Standardized GPC
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Comparison with standards of known value allows the determination of relative molecular weights of sample components.
High Temperature GPC
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High Temperature GPC is most often applied for the analysis of polyethylene and polypropylene.
Tetradetection GPC
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Employs Right angle light scattering, low angle light scattering, Viscometry, UV, and refractive index detection enabling the determination of the absolute molecular weight and intrinsic viscosity.
Temperature Rising Elutriation Fractionation
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TREF is a technique for the analysis of polyolefins (primarily polyethylene) which allows the separation of components with different branching structure.
GPC-FTIR
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Changes in the chemistry of polymeric materials can be observed across the molecular weight distribution providing information otherwise unobtainable by any other method.