Filderstadt, Germany – Dataphysics Instruments has unveiled a powerful new tool for dispersion analysis: the Multiscan Stability Index (MSI), available on the MultiScan MS 20 system. Designed to simplify the evaluation of complex destabilisation phenomena such as sedimentation, aggregation, and creaming, MSI delivers a single, quantitative value that reflects the overall stability of a formulation.

The MultiScan MS 20 employs static multiple light scattering (SMLS) to monitor transmitted and backscattered light across the full sample height over time. Traditionally, interpreting these signals required expert analysis, especially when multiple destabilisation processes occurred simultaneously. MSI eliminates this barrier by condensing spatial and temporal variations into one stability number – the closer to zero, the more stable the sample.

 

To make results intuitive, Dataphysics has introduced a colour‑coded MSI scale that correlates numerical values with visible destabilisation levels, ranging from “no notable variation” to “highly visible change.” This enables researchers to quickly compare and rank formulations without manual calculation or software comparisons.

In a demonstration using four milk substitute formulations, MSI successfully distinguished between samples undergoing creaming, sedimentation, or combined processes. Sample 3, for instance, showed the highest MSI values, confirming its instability, while Samples 1 and 4 remained comparatively stable. MSI zone analysis further revealed layer‑specific behaviours, offering deeper insight into destabilisation mechanisms.

By providing a robust, objective, and user‑friendly stability criterion, MSI empowers industries working with dispersions – from food and pharmaceuticals to coatings and energy – to streamline formulation development and quality control.

For more information, visit www.dataphysics-instruments.com or contact Dataphysics Instruments GmbH, Filderstadt.

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