Malvern ZS90

The Zetasizer Nano Z is the perfect system for measuring zeta potential and electrophoretic mobility of colloids and nanoparticles, when the measurement of size or molecular weight is not required.
Laser Doppler Micro-electrophoresis is used to measure zeta potential. An electric field is applied to a solution of molecules or a dispersion of particles, which then move with a velocity related to their zeta potential. This velocity is measured using a patented laser interferometric technique called M3-PALS (Phase analysis Light Scattering). This enables the calculation of electrophoretic mobility, and from this, the zeta potential and zeta potential distribution.

Minimum sample volume: 150 μl
Temperature control range: 0°C – 90°C (+/-0.5%)
Light Source: He-Ne laser 633nm, Max 5mW.
Laser safety: Class 1
Temperature: 15°C – 40°C
Humidity: 35% – 80% non-condensing