Rare instruments. Rarer interpretation.
The instruments matter because two of them are rarely offered as contract services anywhere in North America. What matters more is knowing which measurement answers your question, and how to read the result.
Analytical centrifugation — accelerated stability
An analytical centrifuge measures how a dispersion separates under accelerated conditions, directly and quantitatively — sedimentation, creaming, flocculation, and coalescence — across a full sample in a single run. It is the fastest defensible route to a shelf-life estimate and a stability ranking.
This capability is almost never available as an independent contract service; most instruments run behind closed doors in-house.
Dynamic light scattering & zeta potential
Particle and droplet size distribution by dynamic light scattering, and zeta potential for surface charge. Together they explain much of why a dispersion is stable or isn't — and read correctly, they flag trouble before it shows up on a shelf.
Rotational rheometry — flow & viscoelasticity
Flow curves and viscosity profiles across shear rates, yield point determination, and oscillatory testing — amplitude and frequency sweeps — for full viscoelastic characterization of dispersions and formulated products.
For dispersions, rheology is the other half of the stability story: yield stress and low-shear viscosity decide whether particles stay suspended, and viscoelastic structure explains texture, pumping, spraying, and application behavior.
Interfacial & foam analysis
Dynamic surface and interfacial tension, interfacial rheology, and quantitative foam analysis. Surfactant and interface behavior sit underneath every emulsion and foam; measuring it directly is the difference between guessing and knowing.
Also rare as a contract offering.
What you receive
A report with the data, the raw files your team expects, and — first, at the top — a plain-language interpretation: what the results mean, why, and the recommended next step. Turnaround quoted per project; rush available.