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WP8003: IEX-MALS for protein separation and characterization

Ion-exchange chromatography coupled to multi-angle light scattering (IEX-MALS) allows absolute molar mass determination of proteins, protein complexes and peptides in a heterogenous sample. IEX-MALS can overcome some of the restrictions of SEC-MALS that arise from the limited separation ability of analytical SEC column.

The IEX-MALS method is valuable for quality assessment as well as characterization of native oligomers, charge variants, modified proteins and mixed-protein samples.


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Wyatt Technology is the recognized leader in light scattering instrumentation and software for determining the absolute molar mass, size, charge and interactions of macromolecules and nanoparticles in solution.

Wyatt's line of multi-angle static light scattering products couple to size exclusion chromatography (SEC-MALS), field-flow fractionation (FFF-MALS), and stop-flow composition-gradient systems (CG-MALS). Our dynamic light scattering (DLS) products operate in traditional cuvette as well as on-line and automated, high-throughput modes. We also offer unique instruments for electrophoretic light scattering (MP-PALS), differential refractometry, and differential viscosity.

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