Zetasizer Ultra (Malvern Panalytical)

Instrument for measurement of the particle size, zeta potential and concentration of micro and nanoparticles and molecules in dispersion or suspension.

The Zetasizer Ultra (Malvern Panalytical) instrument provide the ability to:

• measure the size, size distribution, charge and concentration of micro and nanoparticles

• studies of dispersions stability

• optimization of nanoparticle synthesis

• characterization of model membranes (liposomes, micelles)

• characterization of polymers solutions, proteins

• etc

Year of manufacture: 2018.

Price: around 500.000,00 kn ( 66.360,00 eur)

Instrumental features:

Principle of work: dynamic and electrophoretic light scattering

Light source: 632.8 nm red laser, He-Ne 10 mW

Multi-Angle Dynamic Light Scattering (MADLS): foward (13°),  side (90°) and back (173°) scattering

Particle size: measuring range: 0.3 nm – 10 μm

Minimum sample volume: 3 μL

Zeta potential: measuring range: no limitations;    minimum sample volume: 20 mL

Maximum sample conductivity: 260 mS/cm

 Additional characteristics:

Multi-Angle Dynamic Light Scattering (MADLS): 3 detection angles → individual results as well as an unique result of all scattering angles → real image of the sample

ZS Xplorer software: a) Quality guidance system, automatic advice how to improve measurement; b) Adaptive Correlation: automatically adjust parameters, shorter measurement duration, more sub-runs → intelligent data: reliable and repeatable data → representative view of the sample

Particle concentration: measuring range: 1´108 - 1´1012 particles/mL

Determination of concentration without previous calibration

Possibility of showing the total concentration of particles and the concentration of particles in a given distribution

Temperature control range: 0 - 120 °C

Variable measurement positioning inside cuvette

Fluorescence filter; Horizontal and vertical polarizers - the ability to distinguish translational from rotational diffusion – for anizotropic particles (rods, nanotubes...)

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