Particle Size Analyser (PSA)

Brand : Malvern Instruments
Model : Nano ZS
Range : 0.6 nm to 6000 nm

The Zetasizer Nano range of instruments provide the ability to measure three characteristics of particles or molecules in a liquid medium. These three fundamental parameters are particle size, zeta potential and molecular weight. Unique technology within the Zetasizer system allows these parameters to be measured over a wide range of concentrations.

The Malvern Zetasizer measures particle and molecule size from below a nanometer to several microns using dynamic light scattering, zeta potential and electrophoretic mobility using electrophoretic light scattering, and molecular weight using static light scattering.

The Zetasizer range features pre-aligned optics and programmable measurement position for the measurement of size and zeta potential over a wide concentration range and precise temperature control necessary for reproducible, repeatable and accurate measurements.




Emulsions Droplet size and zeta potential are critical indicators of emulsion stability.
Proteins Measure the size, aggregation, and surface charge (zeta potential) of proteins.
Inks and paints Detect the oversize particles in inks and paints. The Zetasizer is a popular particle size analysis technique to measure the size distribution of inks.
Nanoparticles Dynamic light scattering (DLS) remains the most popular particle size analysis technique for nanoparticles. The Zetasizer system can be used to measure the size of nanoparticles.
Microbubbles The Zetasizer is the most common instrument used to measure the size and concentration of microbubbles used in a variety of applications including contrast agents and targeted drug delivery.
Isoelectric point (IEP) The isoelectric point (IEP) of a dispersion is the pH value where the zeta potential equals zero. This is the condition that is least stable and frequently leads to agglomeration for suspensions and phase separation for emulsions. Determining the IEP is a common zeta potential application for the Zetasizer particle size and zeta potential analyzer.
Liposomes A liposome is a spherical vesicle having at least one lipid bilayer used for drug delivery. Most liposomes are measured using a Zetasizer (DLS) system.
Sample Requirements
• Liquid
• Powder
• non fluorescent

Additional information


Diploma (UiTM) Industrial Chemistry


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