Malvern Panalytical offers a wide range of molecular weight standards for Gel Permeation Chromatography (GPC) and Size Exclusion Chromatography (SEC) for conventional and universal calibration as well as light scattering.
These standards are available as pre-weighed standards for ease of preparation. Simply add the correct volume of the required solvent to prepare these molecular weight and intrinsic viscosity standards at a known and accurate concentration.
Standards for conventional and universal column calibration have a broad molecular weight range and are available for organic and aqueous applications.
Standards for light scattering and triple detection are characterized using instruments verified with NIST-traceable materials and are available for organic and aqueous applications. They can be used to simultaneously calibrate and normalize detectors and to determine inter-detector volumes and peak broadening parameters.
Malvern Panalytical’s molecular weight standards are pre-weighed into a glass vial. Simply add the desired amount of solvent to achieve the right concentration.
Column calibration standards are run in series through a GPC/SEC system. The elution times of the various molecular weight standards are then used as a reference for the unknown material. Relative molecular weights are obtained when the standard and sample polymers are different.
Light scattering/triple detection standards are used to characterize the detector responses which are then used in the measurement of absolute molecular weight. Normalization factors, detector offsets and band broadening corrections are calculated simultaneously to reduce calibration time.
