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  Chemistry and Biotechnology - Otsuka - Zeta-potential & Particle size Analyzer ELSZ-2000 series

Zeta-potential & Particle size Analyzer
ELSZ-2000 series

In addition to existing zeta potential and particle size measurement, molecular weight analysis function is newly added. (Particle size : 0.6nm-10um/Concentration range: 0.00001%-40%). Electro-osmosis measurement enables high precision analysis of zeta potential using micro-volume (130ul) disposable cell. Furthermore new auto temperature gradient function with extended range between 0 and 90°C makes melting point and phase transition point analysis possible.
icon Higher sensitivity and shorter measure time with new APD.
icon Melting point and phase transition point analysis enabled by auto temperature gradient function.
icon Wide temperature range between 0 and 90°C
icon Wide range Molecular weight analysis
icon Supports concentrated sample measurement
icon High precision zeta potential analysis thanks to electro-osmosis measurement and plot analysis
icon Supports zeta potential measurement of salt condensed sample.
icon Surface zeta potential of smaller area sample
Measure Item:
Zeta Potential -200 ~ 200 mV
Mobility -20×10-4 ~ 20×10-4 cm2/V・s
Particle Size 0.6 nm ~ 10000 nm
Molecular Weight 360 ~ 2000×104
Measure Range:
Temperature 0 ~ 90℃
Concentration Particle Size : 0.00001 % (0.1ppm) ~ 40 % *1
Zeta Potential : 0.001%~40%
Best suitable for basic and applied research of particle characterization in the field of surface chemical, inorganic, semiconductor, polymer, biotechnology, pharmaceutical and medical as well as surface research of film and flat state sample.
icon New functional material
Fuel cell (Carbon nanotube, Fullerene, Function film, Catalyst, Nano-metal)
Bionanotechnology ( Nano capsule, Dendrimer, DDS), Nanobubble
icon Ceramic and paints
Ceramic (Silica, Alumina, TiO2)
Surface modifier, dispersion and cohesion of inorganic sol
Dispersion and cohesion of carbon black and organic pigment
Slurry state sample
Color filter
Flotation adsorption research
icon Semiconductor
Alien objects research on silicon wafer
Interaction research of abrasive/additive on wafer surface
CMP slurry
icon Polymer and Chemical
Emulsion dispersion and cohesion
Surface modifier of latex
Function research of polyelectrolyte
Process control of paper production and Pulp additive research
icon Pharmaceutical and food
Emulsion dispersion and cohesion
Dispersion/Cohesion control of liposome and vesicle
Functionality of surfactant(Micelle)
Particulates dispersed in a solution are normally subject to Brownian motion. The motion is slower with larger particles and faster with smaller particles. When laser light illuminates particles under the influence of Brownian motion, scattered light from the particles shows fluctuation corresponding to individual particles. The fluctuation is observed according to the pinhole type photon detection method so that particle size and particle size distributions are calculated.
Analysis procedure:
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