New accessory enables precise molecular weight analysis

Testa Analytical has introduced the LS Assistant, a versatile add-on for Multiangle Light Scattering (MALS) systems that delivers highly accurate specific refractive index (dn/dc) measurements - essential for reliable molecular weight determination of polymers, proteins, and other macromolecules.

The LS Assistant simplifies dn/dc analysis with intuitive operation and minimal training requirements. Designed for full sample recovery, it allows users to collect and reuse valuable materials for further testing. Its compatibility with a wide range of solvents and integrated temperature control ensures stable, reproducible conditions across diverse applications.

Functioning as both a dn/dc and concentration measurement system, the LS Assistant features dedicated software for rapid, accurate analysis - delivering dn/dc results in minutes. Once the dn/dc value is known, the device can also determine sample concentration with precision.

A major advantage of the LS Assistant is its wavelength-matched configuration, allowing users to select a model that aligns exactly with the operating wavelength of their light scattering system. This matching significantly enhances the accuracy of molecular weight calculations.

The LS Assistant is an ideal complement to MALS, goniometers, and GPC/SEC systems in advanced macromolecular characterisation workflows.

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