Materials Analysis, Testing, and Characterization

Dispersions Characterization

Extensive characterization services are available for both aqueous and non-aqueous dispersions of nanomaterials. NEI has the capability to assess dispersion stability in terms of pH, electrophoretic mobility, zeta potential and viscosity. Further quantitative analysis of dispersion quality is also available, including solids content, rheology, aggregate size, optical transmission, and transmitted haze. Variations in these properties may also be determined as a function of time and/or temperature.

Characterization Services

A full list of our dispersions characterization services can be found in the table below.

Analysis / Test

Options

Turn Around Time

Viscosity (Brookfield Concentric Cylinder Viscometer)• Room temperature
• Each additional temperature (-5°C - 100°C)
• Full Range (-5°C - 100°C, 10 points)
• 2 - 3 business days
• 2 - 3 business days
• 2 - 3 business days
Zeta Potential (in water)• At neutral pH
• Multiple points (pH range: 1-13, 13 points)
• Isoelectric point
• In solvent
• 2 - 3 business days
• 2 - 3 business days
• 2 - 3 business days
• Varies (contact)
Infrared Spectroscopy• IR Spectra (ATR)
• Transmission Range (Wavenumber: 500 - 4000 cm-1)
• Functional Group Analysis
• 1 - 2 business days
• 1 - 2 business days
• 4 - 5 business days
UV-Vis Spectroscopy (Range: 190 - 1100 nm)• N/A• 1 - 2 business days
Cu2+ Ion Concentration• N/A• 1 - 2 business days
pH Measurement• N/A• 1 - 2 business days
Tap Density• N/A• 1 - 2 business days
Water Solution Electrical Conductivity• N/A• 1 - 2 business days