Published 1 Oct 2020
Earlier this year we released the OMNISEC v11.20 software. This latest iteration expands OMNISEC’s capabilities to include conventional and universal calibration analysis methods. Since the data available from these methods based on calibration curves may seem similar to information from…READ MORE >
Tags: analytical results, calibration, gel permeation chromatography, GPC, gpc/sec
Published 25 Feb 2020
As Malvern Panalytical transitions to an OMNISEC-based Gel Permeation Chromatography (GPC) / Size Exclusion Chromatography (SEC) portfolio, I wanted to remind you why the OMNISEC system has quickly established itself as a versatile tool for characterizing and understanding macromolecules (and…READ MORE >
Tags: molecular mass, molecular structure, molecular weight, OmniSEC, polymers
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 20 Jun 2019
Whether your samples are synthetic polymers, natural materials such as polysaccharides, or proteins, antibodies, or other biological samples, gel permeation / size exclusion chromatography (GPC/SEC) is the ideal technique for characterizing those and other types of macromolecules. The information offered from…READ MORE >
Tags: gel permeation chromatography, GPC, gpc/sec, hydrodynamic size, intrinsic viscosity
Published 21 Jun 2018
Almost always, my favorite thing about working for a scientific technology company is getting to work on the latest technologies and learn about the applications available to them. We’re fortunate enough to see the newest technology and play with the…READ MORE >
Tags: Acquity APC, APC, chromatography, green GPC, light scattering
Published 2 Nov 2017
Molecular weight measurements with the Zetasizer software? First a few words of caution: molecular weight or Mw measurements in general are not easy, require time, good sample preparation skills as well as patience. If you are new to the Malvern…READ MORE >
Tags: batch, cuvette, Debye, molecular weight, MW
Published 23 Oct 2017
The term polydispersity (or more recently dispersity without the poly, as per IUPAC recommendation) is used to describe the degree of “non-uniformity” of a distribution. In the field of molecular/nanoparticular characterization, there are in principle two different definitions of polydispersity,…READ MORE >
Tags: dispersity, DLS, dynamic light scattering, gel permeation chromatography, GPC
Published 4 Apr 2017
You all know now that at Malvern, we like producing regular content which is dedicated to you, depending if you are a student, researcher or scientist. I really hope that this new Top Content from the last quarter will help…READ MORE >
Tags: application note, articles, basic principles, DLS, dynamic light scattering
Published 26 Mar 2017
What are Polyolefin Polymers? Polyolefins are macromolecules formed by the polymerization of olefin monomer units. The IUPAC nomenclature term for polyolefins is poly(alkene). The most common polyolefins are polypropylene (PP) and polyethylene (PE). These polymers are prevalent in a wide…READ MORE >
Tags: branching, decalin, gel permeation chromatography, HT-GPC, molecular weight