Zeta Potential Measurement
measurement of zeta potential is used to assess the charging level of small particles dispersed in a liquid. Such colloidal particles may be either macromolecules, or nanometric organic or inorganic particles. This potential reflects the inter-particle repulsion strength and thus provides a measure of the colloidal stability.
Particle size range: 5 nm – 10 µm
Minimal sample volume: 0.75 mL
Maximal sample conductivity: 200 mS/cm
Minimal concentration depends on refractive index of nanoparticles and size.
The instrument is easy to operate. The disposable measurement cells contain the electrodes and thus contamination between samples is avoided. Each measurement should start with measuring a standard sample to verify proper operation of the instrument. It is important that the samples will be as uniform as possible, without contamination of large particles that would scatter light.