Malvern Panalytical offers a low-cost zeta potential analyzer called
Zetasizer Nano ZS90. The system offers a suitable solution where similar results to a legacy system with 90 degree scattering optics are necessary or when the ultimate in sizing sensitivity is not needed.
The Zetasizer Nano ZS90 is designed to measure molecular size and particle size at a 90 degree scattering angle utilizing dynamic light scattering. It is also capable of measuring molecular weight using static light scattering, and electrophoretic mobility and zeta potential using Laser Doppler Microelectrophoresis.
The main features of the Zetasizer Nano ZS90 are:
Molecular weight measurement down to 9,800 Da.
Zeta potential of nanoparticles and colloids using patented M3-PALS technology
Size measurement from 0.3 nm (diameter) to 5 µm using 90 degree scattering optics
Autotitrator option allows automation of measurements
Research software option provides access to additional features and analysis algorithms for the light scattering specialist
21CFR part 11 software option allows compliance with ER/ES
Temperature range extension option to 120°C
Alternative laser, 50 mW at 532 nm for samples incompatible with the usual 633 nm laser fitted
Optical filter option to enhance measurements with fluorescent sample
Unlike other instruments that just sit on people’s shelves and don’t get used, Malvern Panalytical’s Zetasizer Nano is so useable that colleagues come from other universities to make measurements with it.
Sandra Whaley Bishnoi, Assistant Professor of Chemistry at The Illinois Institute of Technology