Published 25 Sep 2019
The primary goal when employing gel permeation / size exclusion chromatography (GPC/SEC) is often to determine the molecular weight of a macromolecular sample. Multi-detector systems, such as Malvern Panalytical’s OMNISEC and TDAmax systems, are able to offer a range of…READ MORE >
Tags: gel permeation chromatography, GPC, hydrodynamic radius, hydrodynamic size, materials characterization
Published 13 Aug 2019
You’ve done the hard parts to get your GPC/SEC instrument ready: prepared the mobile phase, stabilized the detector baselines, and prepared your sample. After injection and completion of your sample sequence, you have acquired data. Congrats! Now, before you even…READ MORE >
Tags: gel permeation chromatography, GPC, materials characterization, molecular weight, OmniSEC
Published 7 Mar 2017
How can I use DLS for sample xyz? What sample concentration / refractive index is needed for reliable DLS size measurements? Has it been done before? In Dynamic Light Scattering (DLS) intensity fluctuations in the sample are analyzed to obtain…READ MORE >
Tags: buffer, clean water, concentration, DLS, dynamic light scattering
Published 11 Aug 2015
When working with a couple of our Morphologi G3-ID cement customers I have come to realize that cement is an incredibly complex product. Working with one of our customers in the cement industry we wrote an article, published last year…READ MORE >
Tags: Cement, materials characterization, Morphologi G3, morphologi G3-ID, particle characterization
Published 30 Jun 2015
The Zetasizer has some optional advanced protein features that you may not be aware of: DLS Debye Plot: a dynamic Debye plot of the measured hydrodynamic size as a function of sample concentration to obtain the dynamic Virial coefficient (also known…READ MORE >
Tags: A2, B22, DLS, dynamic debye, dynamic light scattering
