Malvern Zetasizer Ultra

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Advance with Confidence

The Zetasizer Pro is a robust and versatile system for the measurement of particle and molecular size and electrophoretic mobility and zeta potential of nanoparticles. It enables size measurements to be performed up to three times quicker, compared to previous models, accelerating sample throughput and freeing up operator and system time for other tasks.

Even novice users will produce the highest-quality measurements, thanks to the intuitive interface and the deep learning empowered data quality advice system that highlights issues and provides advice on how to overcome them.


The Zetasizer Ultra is the ultimate companion for fast yet accurate particle and molecule sizing, particle charge and particle concentration measurements, and represents the most intelligent and flexible instrument in the Zetasizer range.

This powerful system has the unique capacity to perform calibration-free particle concentration measurements with ease, even deep into the nano size range.


Alongside Malvern Panalytical’s NIBS (Non-Invasive Back-Scatter) technology, the Zetasizer Ultra offers Multi-Angle Dynamic Light Scattering (MADLS®). This ground-breaking technique provides high resolution angle-independent size measurements, meaning no more worry about missing particles in your sample. With MADLS, you can be sure that all angles are simultaneously covered.


Pushing the upper analytical size range higher than ever before, the Zetasizer Ultra is designed to provide data you can trust to help you make those important decisions to improve your products and processes. Despite its unique capabilities, the Zetasizer Ultra’s speed and ease-of-use are uncompromised, making it by far the most advanced and powerful light scattering system available.

Technical Specification



Avalanche photodiode

Temperature and control range

Purge facility using dry air/nitrogen

Temperature accuracy

0.1°C at 25°C, 0.2°C at 0°C, 0.5°C at 90°C, 2.5°C at 120°C

Dimensions (W, D, H)

322 mm x 565 mm x 245 mm




AC 100-240 V, 50-60 Hz, 4.0 A

Measurement principle:

Particle size and molecular size

Dynamic light scattering (Non-Invasive Back-Scatter - NIBS)

Dynamic light scattering (13°, 173°)

Multi-Angle Dynamic Light Scattering (MADLS)

Measurement principle:

Zeta potential

Mixed-mode measurement, phase analysis light scattering (M3-PALS)



( Download data sheet)