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 two options: a multi-angle light scattering (MALS) detector or a right angle and low angle light scattering detector (RALS/LALS). Both light scattering configurations will provide the absolute molecular weight of a sample but utilize different approaches toward that common goal. Fortunately, Malvern Panalytical offers both; the modular SEC-MALS 20 unit ...