Charge it! Electrophoretic Mobility as a Tool for Characterizing Nanoparticle Stability
CEN Webinars: Stronger Bonds
Charge it! Electrophoretic Mobility as a Tool for Characterizing Nanoparticle Stability
Tuesday June 2nd 2015
USA 11:00 am EDT, 8:00 am PDT, 16:00 BST
Steven P. Trainoff, Ph. D,
R&D Chief Scientist,
Wyatt Technology Corporation
Jyllian Kemsley,
Senior Editor,
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Zeta potential is an indispensable measurement commonly used to guide efforts to control stability of particle suspensions. The recent surge of nanoparticle applications has challenged instruments that were designed for analyzing colloids and emulsions. This webinar presents new developments in instrumentation that have expanded the range and methods of zeta potential measurements.

Determination of zeta potential requires knowledge of both electrophoretic mobility and size. These are usually measured sequentially and can potentially damage fragile biomolecules due to high applied voltage. The advances in phase analysis light scattering, described in the webinar, enable highly sensitive measurements to be conducted rapidly at low voltage. They also provide real-time monitoring of samples by simultaneous dynamic light scattering to detect potential degradation, in addition to providing the requisite size data. In addition, sample collection can now be fully automated with an auto-sampler to allow unattended operation. Applications presented will include characterization of drug conjugates, vaccine adjuvants, proteins, and gold nanoparticles.


- Fundamentals of phase analysis light scattering (PALS) for measurement of electrophoretic mobility and zeta potential

- Recent advances in PALS technology

- Applications of zeta potential for characterizing the colloidal stability of nanoparticles and macromolecules

  • • R&D managers who encounter common challenges associated with nanoparticle characterization.
  • • Staff scientists involved in the development of drug delivery.
  • • Project Supervisors needing more information about cutting-edge technology for protein, biopolymer and nanoparticle characterization.
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