Zetasizer Lab


Malvern Panalytical

Malvern Panalytical

Our entry-level Zetasizer does not compromise on features. The Zetasizer Lab incorporates Adaptive Correlation, M3-PALS and constant current zeta mode. The Zetasizer Lab also ships with ZS Xplorer, easy-to-use analytical software. ZS Xplorer offers instant feedback on data quality, and guidance on how to improve your results.

Key Differences

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The Zetasizer Lab is the perfect entry-level system, offering a wide range of features, including:

  • DLS analysis: particle size measurements from 0.3 nm to 10 μm

  • Extended size range analysis offers improved accuracy for particle sizes above 1 μm, and indicative results above 10 μm (using ZSU1002 Low Volume Disposable Sizing Cell)

  • Zeta potential of nanoparticles and colloids using M3-PALS analysis and constant current zeta mode

  • Molecular weight using Static Light Scattering at 90°

  • Supports use of Low Volume Disposable Capillary Cell for size measurements in sample volumes as low as 3 μL

  • Available in Blue Label and Red Label variants:Choose Blue Label for routine sample investigation such as metallic colloids, metal oxides and pigments
    Choose Red Label for more challenging sample types, such as proteins, surfactant solutions and low solid content samples

  • On-site upgradeability to either Zetasizer Pro or Zetasizer Ultra models

Technical Specification

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Specification for the Zetasizer Lab Red Label and Blue Label

Particle size and molecular size

Measurement principle:

Classical 90° Dynamic Light Scattering

Measurement angle:

90°, 13° (1)

Measurement range:

0.3 nm to 15 μm (2)

Minimum sample volume:3 μL

Concentration range:

Minimum Sample Concentration:

Blue Label: 1 mg/mL 15 kDa Protein

Red Label: 0.3 mg/mL 15 kDa Protein

Maximum sample Concentration: (3)

40% w/v

Zeta potential

Measurement principle:

Mixed-Mode Measurement phase analysis light scattering (M3-PALS)

Size range:

3.8 nm – 100 μm

Minimum sample volume:

20 μL (4)

Concentration range:

Red Label: 1 mg/mL (5) to 40% w/v (6)

Blue Label: 10 mg/mL (5) to 40% w/v (6)

Sample conductivity range:

Maximum: 260 mS/cm

Static Light Scattering (molecular weight)

Measurement principle:

Static Light Scattering with Debye Plot

Molecular weight range:980 Da – 20 MDa


+/- 10% typical



Avalanche Photodiode

Laser safety:

He-Ne (633 nm)

Blue label: 4 mW Max

Red label: 10 mW Max

Temperature control range:

0°C to 120°C (7)

Dimensions (W, D, H):322 mm x 565 mm x 245 mm


19 kg


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

Power consumption:

Max 100 W, Typical 45 W

Ambient conditions:

+10°C to +35°C, 35 to 80% RH (Non-condensing)


USB 2.0 or higher



1 - Water as dispersant

2 - Indicative data available for particle sizes greater than 10 μm when using Extended Size Range analysis and low volume disposable sizing cell accessory

3 - Sample dependent

4 - Using patented diffusion barrier technique

5 - Measured using 15 kDa protein

6 - Measured using bile acid

7 - Dry nitrogen cell purge required for temperatures below dewpoint

8 - Accuracy 0.1°C at 25°C, 0.2°C at 0°C, 0.5°C at 90°C

Zetasizer Lab


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