Nanotechnology Particle Size and Charge Measurement Solutions
Microtrac has enhanced the Nanotrac instrument line to include Zeta Potential measurement. The determination of Zeta Potential provides critical information to researchers and production personnel regarding the stability of a wide range of emulsions and colloidal suspensions. Zetatrac utilizes the unique Nanotrac probe technology to provide fast, accurate, convenient and cost effective Zeta Potential measurements without the need for disposable cuvettes.
One instrument—Three Measurements:
- Zeta Potential
- Particle Size
- Molecular Weight
Zeta Potential is a measure of the charge residing on the surface or near surface of a suspended particle. Zetatrac determines Zeta Potential by measuring the response of charged particles to an electric field. In a constant electric field particles drift at a constant velocity. Through the velocity, the charge and Zeta Potential are determined. Zetatrac utilizes a high frequency AC electric field to oscillate the charged particles. The Brownian motion power spectrum is analyzed with the Nanotrac controlled reference technique of particle sizing to determine the Modulated Power Spectrum, a component of the power spectrum resulting from the oscillating particles. Zeta Potential is calculated from the MPS signal. Also determined are the particle mobility (velocity per electric field), particle charge and particle size.
Zetatrac is controlled by Microtrac FLEX Operating Software. Through the use of Standard Operating Procedures (SOP’s), the user is guided through a series of easy steps to generate full characterization data on Zeta Potential and Particle Size. Data archiving and retrieval is through standard Microsoft Access™ database management with the ability to export data either manually or automatically. Graphic data presentations, report generation, trending and statistical analysis are all standard features of FLEX Software.