'Why Closer Is Better' - New GPC/SEC Application Note from Malvern Instruments
7 September 2010: Malvern, UK: A newly available application note from Malvern Instruments explains why, when measuring samples using Gel Permeation Chromatography/Size Exclusion Chromatography (GPC/SEC), low angle light scattering (LALS) is the only LS technique that actually measures a scattered light intensity directly proportional to molecular weight. The application note "LALS or why closer is better", is free to download from Malvern's extensive knowledge base at: www.malvern.com/common/downloads/campaign/MRK1396-01.pdf
By avoiding the issues caused by data extrapolation or data fitting, which limit the alternative techniques of multi-angle light scattering (MALS) and right-angle light scattering / viscometry (RALS/viscometry), Malvern's state-of-the-art Viscotek LALS detector allows GPC/SEC practitioners to measure the molecular weight of their samples with certainty. In addition, the small size and simplicity of the LALS detector allows it to be used easily in integrated multidetector systems alongside viscometers, enabling the simultaneous determination of both molecular weight and molecular structure.
For further information on the Viscotek LALS detector, the TDAmax GPC/SEC and other chromatography systems from Malvern Instruments, as well as the opportunity to download Malvern's new application note, please visit: www.malvern.com
About Malvern Instruments
Malvern Instruments is a market leader in measuring performance controlling material properties. These include particle size, particle shape, zeta potential, molecular weight, size and conformation, rheological properties and chemical distribution. Malvern delivers the systems, support and expertise that ensure the analytical integrity and productivity needed to drive research, development and manufacturing.
Malvern's measurement solutions for scientists, technologists and engineers advance continually through customer collaboration. Complementary materials characterization systems deliver inter-related measurements that reflect the complexities of particulates and disperse systems, nanomaterials and macromolecules. Combining intelligently implemented technologies with in-depth industry applications knowledge and support, Malvern provides customers with the competitive advantage they demand.
Headquartered in Malvern, UK, Malvern Instruments has subsidiary organizations in all major European markets, North America, China, Korea and Japan, a joint venture in India, a global distributor network and applications laboratories around the world. www.malvern.com
USA contact:
Marisa Fraser, Malvern Instruments Inc.
117 Flanders Road, Westborough, MA 01581-1042 USA
Tel: +1 508 768 6400 Fax: +1 508 768 6403 marisa.fraser@malvern.com
