Published 5 Feb 2015
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 >
Tags: columns, gel permeation chromatography, GPC, HPLC, LALS
Published 27 May 2014
When is Single Angle Light Scattering (LALS/RALS) the right detection technique to use, and when do you need Multi Angle Light Scattering (MALS)? Size Exclusion Chromatography (SEC) is a well-established tool for the measurement of the molecular weight and purity of…READ MORE >
Tags: gel permeation chromatography, GPC, LALS, molecular weight, polymers
Published 13 Sep 2013
A list of historic Viscotek models When Viscotek became part of Malvern in 2008 it had already been a market leader in Gel Permeation Chromatography GPC, Flow Injection Polymer Analysis FIPA as well as dilute solution viscometry DSV for over…READ MORE >
Tags: gel permeation chromatography, LALS, light scattering, MALS, molecular weight
Published 18 Jun 2013
Refractive index increment dn/dc values when you need them? In light scattering a crucial parameter that appears together with the Rayleigh Ratio RΘ is the refractive index increment, also known as “dn/dc”. Typically, Kc/RΘ is plotted versus concentration to extrapolate…READ MORE >
Tags: dn/dc, gel permeation chromatography, increment, KCR, LALS
Published 31 Jan 2013
My colleagues Kevin Mattison, Mark Pothecary and I gave a short course at Peptalk 2013 in Palm Springs, CA, last week. Attendees from Europe, Australia and the US proved to be a lively and participating audience in the Pueblo Meeting…READ MORE >
Tags: A2, B22, DLD, dynamic light scattering, LALS