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Malvern Panalytical Zetasizer ZS90

UsedMalvern PanalyticalDynamic light scatteringNetherlands
Procurable

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Particle size measurement range
0.3 nm to 5 µm
Zeta potential measurement range
±500 mV
Molecular weight measurement range
9,800 Da to 20,000,000 Da
Measurement angle
90° backscatter detection
Temperature control range
0°C to 90°C
Availability
Procurable
Lead time
Confirmed with your quote
All 27 specifications
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Specifications 27

Brands
Malvern Panalytical
New/Used
Used
Particle size measurement range
0.3 nm to 5 µm
Zeta potential measurement range
±500 mV
Molecular weight measurement range
9,800 Da to 20,000,000 Da
Measurement angle
90° backscatter detection
Temperature control range
0°C to 90°C
Temperature control accuracy at 25°C
±0.1°C
Temperature control accuracy at 0°C
±0.2°C
Temperature control accuracy at 90°C
±0.5°C
Extended temperature range option
Up to 120°C
Sample volume for size measurements
150 µL
Sample volume for zeta potential measurements
150 µL
Sample volume for molecular weight measurements
20 µL
Sample concentration range for zeta potential measurements
Up to 40% w/v
Sample conductivity range for zeta potential measurements
0 to 300 mS/cm
Dimensions (W x D x H)
320 mm x 600 mm x 260 mm
Weight
21 kg
Power supply
AC 100-240V, 50-60Hz
Power consumption
100 W
Laser type
He-Ne laser, 633 nm
Laser power
Maximum 4 mW
Laser safety classification
Class 1
Detector type
Avalanche photodiode
Detector quantum efficiency at 633 nm
>50%
Availability
Procurable
Lead time
Confirmed with your quote

Product description

High-precision DLS system for particle size (0.3 nm–5 µm), zeta potential, molecular weight, with 0–90°C control.

The Malvern Zetasizer Nano ZS90 is a high-performance particle characterisation system designed to measure particle size, zeta potential, and molecular weight in various dispersions and solutions. Utilising dynamic light scattering (DLS) technology, this instrument provides precise and reliable analysis, making it ideal for applications in nanomaterials, pharmaceuticals, and colloidal research.

Key features include:

  • Particle size measurement: Accurately measures sizes from 0.3 nm to 5 µm using 90° scattering optics.
  • Zeta potential analysis: Assesses the charge and stability of colloidal dispersions, crucial for understanding particle interactions.
  • Molecular weight determination: Measures molecular weights as low as 9,800 Da, aiding in the characterisation of macromolecules.
  • Temperature control: Features a built-in Peltier system, allowing measurements between 0°C and 90°C, essential for temperature-sensitive samples.
  • User-friendly software: Comes with preloaded software and a complete computer system, ensuring a seamless user experience.

This instrument is widely used in biotechnology, particularly in bioprocessing, gene editing, and synthetic biology research. Its ability to provide detailed particle characterisation makes it invaluable in biopharmaceutical production pipelines and molecular diagnostics. Commonly found in university laboratories, biomedical research centres, and clinical environments, the Zetasizer Nano ZS90 supports a range of scientific investigations. First released in the early 2000s, it remains a relevant and trusted tool in the scientific community.

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Frequently asked questions

How long does laboratory equipment typically last?

With a service contract, ten to fifteen years is normal for most benchtop instruments. Detectors and pumps are the parts that wear first.

Can I get service for older equipment?

Often, yes. Verified suppliers frequently work with service partners converting the instrument. If applicable, we can list servicing options alongside the offer.

Where can I buy parts?

Ask a scientist through the request button. Parts are often available even when the instrument itself is discontinued.

What is the typical lead time for refurbished equipment?

Two to six weeks, depending on refurbishment scope and whether calibration is included.

Does laboratory equipment ship internationally?

We ship to 38 countries. Crating and customs handling are quoted with the instrument.

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Last updated 7 November 2026