Malvern Zetasizer Nano ZS particle size analyzer.
Description: The Zetasizer Nano ZS is a molecular and particle size, surface charge, and molecular weight measurement system based on static light scattering (SLS), dynamic light scattering (DLS), and electrophoretic light scattering (ELS). ). These are rapid, accurate and repeatable measurement methods that do not require large sample volumes and are non-destructive.
SLS determines the molecular weight from different concentrations of a sample by applying the Rayleigh equation.
DLS uses the Brownian motion of particles, which move randomly in a liquid. Through established theories, the speed of diffusion is related to size.
ELS combines light scattering with electrophoresis, converting electrophoretic mobility into a measure of zeta potential.
Technical specifications:
• Particle size:
- Measurement angles: 90º
- Measurement range: 0.3 nm – 10 µm
- Max. concentration: 40 w/v
- Buckets: polystyrene, glass, quartz
• Zeta potential: - Size range: 3.8 nm – 100 µm
- Max. concentration: 40 w/v
- Max. conductivity: 260 mS/cm
- Buckets: polystyrene
• Molecular weight: - PM range: 300 Da – 20 mDa
- Cuvette: quartz
• System: - Detector: Avalanche photodiode
- Laser: He-Ne (633 nm)
- Temperature control range: 0º to 90º C
Applications:
• Molecular and particle size distribution analysis.
• Analysis of the stability or tendency of molecules or particles to aggregate, using zeta potential.
• Measurement of molecular weight.