Fraser McNeil-Watson of Malvern Instruments will make a topical presentation at a one-day meeting titled 'Characterisation of Sub-Micron and Nano-Sized Particles'.
The meeting's programme includes presentations on different methods available for submicron and nano-sized particle characterisation and will discuss method validation and checking, as well as exploring important aspects of sample preparation and dispersion.
McNeil-Watson, who manages the novel-measurement group at Malvern, will present 'Optical Methods for Particle Size and Zeta Potential Determinations with an Overview of Acoustical Techniques'.
Malvern's Zetasizer Nano series of particle-characterisation systems measures particle size, zeta potential and molecular weight.
The novel-measurement technology and patented optics built into the systems make them equally applicable to characterising high-concentration colloids and nanoparticles of all types, through to measurement of dilute proteins and macromolecules in their native state, requiring as little as 12 microlitres of sample.
Zetasizer Nano systems use the combination of patented NIBS (non-invasive back-scatter) optics and dynamic light scattering (DLS) to measure the size of particles and molecules from 0.6nm to six microns.
Zeta potential measurement in both aqueous and non-aqueous dispersions uses the latest M3-Pals technology, while molecular weight is an absolute measurement using static light scattering.
A choice of measurement cells includes a disposable zeta potential cell that prevents cross-contamination of samples and a high-concentration cell for zeta potential measurement.
All systems are compatible with the MPT-2 autotitrator, enabling the automation of pH, conductivity and additive-trend measurements.
The meeting was organised by the Particle Characterisation Interest Group of the Royal Society of Chemistry and The Joint Pharmaceutical Analysis Group.
It will take place on 17 March 2010 at the Royal Pharmaceutical Society in London.
