Tag Archives: OMNISEC Resolve


Published 30 May 2019

Using GPC/SEC for compositional analysis

Gel Permeation / Size Exclusion Chromatography is the ideal technique for determining the molecular weight of macromolecules.  In addition to molecular weight, other molecular parameters can be calculated by taking advantage of various detector combinations, such as intrinsic viscosity (IV),…READ MORE >

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Published 15 Nov 2018

Can GPC/SEC determine if my sample is branched?

While talking to customers about their samples, a frequent topic that comes up is whether or not their samples are branched.  Fortunately, I work primarily with Malvern Panalytical’s gel permeation / size exclusion chromatography (GPC/SEC) product range, which in addition…READ MORE >

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Published 19 Sep 2018

Which light scattering detector is best for me?

Determining which gel permeation/size exclusion chromatography (GPC/SEC) system is best for your needs can be a daunting task. Even after you’ve decided to include a light scattering detector to obtain absolute molecular weight data you’re still left to choose between…READ MORE >

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Published 24 Jul 2018

Why does my viscometer signal have a negative peak?

If you’ve ever analyzed GPC/SEC data collected on your OMNISEC or TDA 305 instrument that included a viscometer detector, you might have observed and wondered about a negative peak that elutes in the viscometer signal long after the sample peak. …READ MORE >

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Published 12 Jul 2018

Why do I need a standard if I have a GPC/SEC system with a light scattering detector?

To many people, obtaining molecular weight information from GPC/SEC analysis involves a lengthy calibration process.  A series of standards of known molecular weight are analyzed and a calibration curve based on the standards’ retention volume is generated.  This can be…READ MORE >

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Published 25 Mar 2015

Perfecting Polymer Measurements: OMNISEC Q&A

A couple of weeks ago I had the opportunity to present a live webinar through Chemical & Engineering News about how our latest solution for Gel Permeation Chromatography/Size Exclusion Chromatography (GPC/SEC), OMNISEC, can help our customers with their synthetic polymer…READ MORE >

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Published 5 Feb 2015

GPC detectors – OMNISEC

GPC detector – OMNISEC – Your Questions Answered Thanks so much to those of you who joined us for the launch of  OMNISEC, our new GPC/SEC system.  If you missed the event you can play it back by clicking here, to…READ MORE >

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