Title:Pharmaceutical Applications and Advances with Zetasizer: An Essential
Analytical Tool for Size and Zeta Potential Analysis
Volume: 16
Issue: 3
Author(s): Sonakshi Garg, Preeti Patel, Ghanshyam Das Gupta and Balak Das Kurmi*
Affiliation:
- Department of Pharmaceutics, ISF College of Pharmacy, GT Road, Moga, 142001, Punjab, India
Keywords:
Zetasizer, dynamic light scattering, electrophoretic light scattering, static light scattering, qualification, zeta potential analysis.
Abstract: Zetasizer is an advanced device that measures various properties of particles or molecules
suspended in a liquid medium. It is extensively used for evaluating the size of nanoparticles,
colloids, and biomolecular particles, and for determining particle charge. There are several analytical
techniques by which the size, zeta potential, and molecular weight can be determined, like Dynamic
Light Scattering (DLS) that measures the size of particles in dispersed systems, which can
range from sub-nanometers to several micrometers in diameter. Electrophoretic Light Scattering
(ELS) analyzes the mobility and charge of particles, also known as the zeta potential. Static Light
Scattering (SLS) determines the molecular weight of particles in a solution. The Zetasizer is part of
the Zetasizer Advance range of benchtop systems available for laboratory use. The Zetasizer Ultra
model offers unique measurement capabilities, such as Multi-angle Dynamic Light Scattering
(MADLS) and particle concentration. These features offer a deeper understanding of samples, making
the Zetasizer a vital instrument in numerous scientific and industrial applications. In this review,
we have discussed Zetasizer’s principles for the determination of particle size, zeta potential,
and molecular weight, along with its qualification and applications in different formulations.