Sample Type:

Sizing: Globular proteins, nanoparticles, small polymers, colloids in non-absorbing liquid

Zeta Potential: Proteins, nanoparticles, polymers, colloids suspended in non-absorbing liquid, with relative permittivity (dielectric constant) > 1.5 and viscosity < 30 cP

Size Range:

Sizing: > 0.3 nm to 10 μm, sample dependent

Zeta Potential: 1 nm to 100 μm, sample dependent

Maximum Sample Conductivity:

Sizing: unlimited

Zeta Potential: 220 mS/cm, covering saline and PBS solutions for proteins, sample dependent

Concentration Range:

Sizing: 0.1 ppm to 50 mg/mL, depending on refractive index and concentration

Zeta Potential: 40% v/v, sample dependent

Signal Processing:

Sizing: dynamic light scattering, DLS

Zeta Potential: electrophoretic & true Phase Analysis Light Scattering, ELS & PALS

Precision:

Sizing: ± 1% typical

Zeta Potential: ± 3% typical

Temperature Control:

-5 °C to 110 °C, ± 0.1 °C, active control.  No external circulator required

Condensation Control:

Purge facility using dry air, nitrogen preferred

Standard Laser:

40 mW red diode laser, nominal 640 nm wavelength

Scattering Angles:

15°, 90°, 173°

Location: Hunter 236

Contacts: Dr. Jason McNeill

Dr. Rakesh Sachdeva