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The dual capability Zetasizer µV is dedicated to the measurement of proteins, and uses dynamic light scattering (DLS) to measure size, and static light scattering (SLS) to measure molecular weight.


The Zetasizer µV is a highly sensitive dual function light scattering detector. It can be used as a RALS detector with any GPC/SEC system, including Viscotek, to give absolute size (by DLS) and absolute molecular weight (by SLS). Alternatively, in cuvette mode, it is suitable for the detection of aggregates and for monitoring aggregate formation using DLS. The Zetasizer µV can be connected to any GPC/SEC system and concentration detector using an 8µl quartz flow cell and standard chromatography tubing.  This allows the measurement of absolute size, absolute molecular weight, aggregation, and conjugation (when used with a second concentration detector).

In cuvette mode, batch measurements of particle and molecular size (by DLS) can be made by simply removing the flow cell from the unit and inserting a standard cuvette containing the sample.

  • Switch in seconds from chromatography detector to cuvette mode.
  • Accurate and repeatable results using precise temperature control.
  • Sensitivity – 0.1mg/mL 15kDa protein (Lysozyme).
  • Only 2µL sample required in cuvette mode to preserve sample.
  • 8µL flow cell for chromatography mode ensures minimal band broadening to preserve the resolution of the separation.
  • Connect to any Viscotek system for full software integration and truly automated operation
  • Connect to any third party SEC system using OmniSEC software and OmniFACE interface.
  • Automated temperature trends for aggregation temperature determination.

How it works

The Zetasizer µV incorporates two techniques that can be used in both chromatography detector mode and cuvette mode.
Dynamic Light Scattering is used to measure particle and molecule size. This technique measures the diffusion of protein molecules moving under Brownian motion, and converts this to size and a size distribution using the Stokes-Einstein relationship.

Static Light Scattering is used to determine molecular weight. When used as a SEC detector, the light scattering intensity in combination with the signal from a concentration detector enables the absolute molecular weight to be calculated. In cuvette mode, measurements from a few different concentrations are combined to draw a Debye plot. From this a molecular weight and second virial coefficient can be calculated.


Measurement type 1

Measurement type:
Particle size, molecular size.
Measurement range:
0.15nm – 1.0 microns* (radius)
Measurement principle:
Dynamic Light Scattering
Measurement angle:
Minimum sample volume:
Better than +/-2% on NIST traceable latex standards
Precision / Repeatability:
Better than +/-2% on NIST traceable latex standards

Measurement type 2

Measurement type:
Molecular weight as SEC detector
Measurement range:
<1kDa – 5MDa
Measurement principle:
Static Light Scattering
+/- 5% typical
Flow cell volume:

Measurement type 3

Measurement type:
Molecular weight as batch detector
Measurement range:
<1kDa – 5MDa
Measurement principle:
Static Light Scattering using Debye plot
Minimum sample volume:
2µL (3-5 sample concentrations required)
+/- 10% typical


Temperature control range:
2°C - 90°C +/-0.1.**
Light source:
Laser 830nm, Max 60mW
Laser safety:
Class 1

Weight and dimensions

Dimensions (W, D, H):
350mm x 410mm x 170mm

Operating environment

Operating temperature (°C):
15°C – 40°C
35% - 80% non-condensing

Zetasizer µV

Maximum range, sample dependent.
At 25°C

Latest software update

Download update


Cell and cuvette options

Quartz flow cell (ZMV1008) Add flow capability for size measurements to the Zetasizer. Measure size and intensity with MPT-2 autotitrator. Connect to an SEC system for use as a DLS detector, to measure protein size and molecular weight. Low 8µL internal volume.
Low-volume quartz batch cuvette (ZMV1002) Low-volume quartz batch cuvette for size and molecular weight measurements. Compatible with aqueous and non-aqueous solvents and dispersants. Absolute size measurement. Measure molecular weight and second virial coefficient. Minimum sample volume 2 microliters.
Quartz batch cuvette (ZMV1012) Quartz cuvette for batch measurements. Compatible with aqueous and non-aqueous solvents and dispersants. Absolute size measurement. Measure molecular weight and second virial coefficient. Minimum sample volume 12 microliters.
12mm Square Polystyrene Cuvettes (DTS0012) Disposable polystyrene cuvettes. 100 disposable cells complete with 100 stoppers to avoid cross contamination. For size measurements using aqueous dispersants. Compatible with zeta potential measurements using the dip cell.

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Characterizing polymers: Techniques for the measurement of molecular weight, molecular size and branching. Whitepaper (English)

A review of the methods available for measuring the key characteristics of polymers focusing on the benefits and value of gel permeation/size exclusion chromatography (GPC/SEC). Much of the paper talks exclusively about polymers, however many of the ...

Keywords: Polymer solutions English Whitepaper Zetasizer range Molecular structure Molecular size Molecular weight Gel Permeation Chromatography Static Light Scattering Size Exclusion Chromatography Polymers, plastics and rubbers Adhesives and sealants Paints, inks and coatings Food additives Polysaccharides OMNISEC 

A fantastic voyage through the arena of nanoparticle drug delivery Webinar - Recorded (English)

The use of nanoparticles as drug delivery vehicles has seen a large amount of research and investment over the last decade as they have the potential for great benefits in the targeting and efficacy of drug treatments. The interest in them is largely...

Zetasizer range,Archimedes,NanoSight range
Date recorded:
March 18 2015

Keywords: English Zetasizer range Dynamic Light Scattering Webinar - Recorded Eastern Time Resonant mass measurement Archimedes NanoSight range Nanoparticle Tracking Analysis 

Optimizing High-performance Ceramic Inkjet Inks Article (English)

This article highlights how engineering high performance ceramic inkjet inks relies on measuring viscosity across the broad range of shear rates experienced during printing. This shear range can be accessed by combining rotational rheometry for low s...

Keywords: English Article Kinexus range Zetasizer range Rheology and viscosity Dynamic Light Scattering Rheometry - rotational Paints, inks and coatings m-VROCi Rheometry - microfluidic flow 

Powerful protein SEC made simple! Webinar - Recorded (English)

This webinar discusses how Malvern’s protein SEC measurement capabilities within the Viscotek range have developed and improved in the last year. We also introduce the new features that are included in the latest release of OmniSEC, including: Bio...

Viscotek SEC-MALS,Zetasizer µV
Date recorded:
September 30 2014

Keywords: English Gel Permeation Chromatography Size Exclusion Chromatography Webinar - Recorded Eastern Time Zetasizer µV Proteins Viscotek SEC-MALS 

Nuevos puntos de vista en la caracterización de nano partículas Webinar - Recorded (Spanish)

La incorporación de la gama de instrumentos NanoSight para la caracterización de nano partículas añade otra técnica ortogonal a la suite de herramientas disponibles de Malvern. El análisis de rastreo de nano partículas es una nueva tecnología de alta...

NanoSight range,Zetasizer range
Date recorded:
May 28 2014

Keywords: Nanoparticles Zetasizer range Webinar - Recorded Mexico Time Spanish NanoSight range Nanoparticle Tracking Analysis 
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