While SEC-MALS is widely recognized as an essential method for absolute characterization of proteins and polymers, it is also suitable for analysis of the molar mass of peptides despite their low molecular weight (LMW). In fact, a DAWN® or miniDAWN multi-angle light scattering (MALS) detector is instrumental in obtaining on-line molar mass determinations for peptides of fewer than a thousand Daltons.

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DAWN®

DAWN®

The world’s most advanced light scattering instrument for absolute characterization of proteins, conjugates, macromolecules, and nanoparticles.

The DAWN and its companion Optilab dRI detector are the established benchmarks for MALS analysis, cited in thousands of peer-reviewed publications. Multi-angle light scattering detection is indispensable for use with GPC and HPLC-SEC in order to obtain reliable molecular mass distributions and information on molecular conformation, branching ratio, fragments and aggregates.

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miniDAWN®

miniDAWN®

The Best in Basic Multi-Angle Light Scattering for Absolute Macromolecular Analysis.

The miniDAWN’s performance is exceeded only by the DAWN which covers a wider range of size and molecular weight, with even better sensitivity and additional optional modules.

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Optilab

Optilab

Universal Detection for Chromatography and FFF Separations

Using a combination of cutting-edge semiconductor photodiode technology and proprietary computer algorithms, the Optilab achieves an unprecedented combination of sensitivity and range. These features mean that it addresses both standard chromatographic applications and some challenges unique to light scattering measurements such as high concentrations, determination of sample refractive increments (dn/dc) and solvent refractive index.

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