Advanced particle size, zeta potential, molecular weight analyzer

Particle size, zeta potential, molecular weight analyzer

Products > Analytical > Particle size & Zeta potential & Molecular weight > ELSZneo


This is the highest-end model of the ELSZ series, which enables measurement of zeta potential and particle size in dilute to concentrated solutions as well as molecular weight measurement. As a new function, we have adopted multi-angle measurement to improve the resolution of the particle size distribution. It also enables particle concentration measurement, microrheology measurement, and gel network structure analysis.

The new zeta potential plate cell unit has a newly developed coating for high salinity, which enables measurement in a hypersaline environment such as physiological salt solution. We also have a lineup of ultra-trace cell units that measures particle size only with micro-volume samples of 3μL, expanding the possibilities in the life science field.

 Features  (*option)
  • It measures particle size and zeta potential in a wide concentration range from dilute to a concentrated solution (~ 40%)

  • Multi-angle measurement enables measurement of particle size distribution with high resolution

  • Zeta potential of the flat sample can be measured under a hypersaline environment

  • Particle concentration can be measured using the static light scattering method

  • Microrheology measurement is possible by the dynamic light scattering method

  • It is possible to evaluate the network structure and non-uniformity of the gel by measuring multiple points of the gel sample

  • Continuous measurement of particle size and zeta potential is possible with a standard flow cell

  • It has a wide temperature range between 0 and 90℃

  • Degeneration, phase transition temperature analysis of proteins, etc. are possible by the temperature gradient function

  • It provides highly precise zeta potential measurement results by measuring the electro-osmosis flow and plot analysis in the cell

  • *Fluorescent cut filter can be attached


particle sizedynamic light scattering method (photon correlation method)
zeta potentialelectrophoretic light scattering method (laser doppler method)
molecular weightstatic light scattering method
particle sizehomodyne optical system
zeta potentialheterodyne optical system
molecular weighthomodyne optical system
Light sourcehigh power semiconductor laser
Detectorhigh sensitivity APD
Cell unit
standard flow cell unit(zeta potential/particle size)
particle size cell unit(particle size)
Particle size multi-angle cell unit(particle size, molecular weight)
Temperature0 to 90℃ (with gradient function)
Power supply100V±10%, 250VA
Size and weight330(W) x 565(D) x 245(H)mm, approx. 22kg

Measurement items

  • Molecular weight
  • Particle size
  • Zeta potential
  • Particle concentration
  • Microrheology
  • Gel network structure

Molecular weight340 ~ 2,000x10^4
Particle size0.1 ~ 10,000nm
Mobility-20x10^-4 ~ 20x10^-4cm²/V·s
Zeta potentialno limitation

Measurement range

Temperature0 ~ 90℃

*particle size: 0.00001%(0.1ppm) ~ 40%, zeta potential: 0.001% ~ 40%

*Latex 112nm: 0.00001 ~ 10%, Taurocholic acid: ~ 40%


It is ideal for basic and applied research dealing with surface science of not only fine particles but also films and flat plates in the fields of surface chemistry, inorganic substances, life sciences, semiconductors, polymers, biology, pharmacy, and medicine.

  • New functional material
    -Fuel cell(Carbon nanotubes, Fullerenes, Cellulose nanofibers, Functional films, Catalysts, Nano-metals)
    - Bionanotechnology (Nanocapsules, Dendrimers, DDS, Bio-nanoparticles), Nanobubbles, Biocompatible materials 

  • Ceramic and paints
    - Ceramic(silica, alumina, TiO2)

    - Surface modifier, dispersion, and cohesion of inorganic sol

    - Dispersion and cohesion of carbon black and organic pigments

    - Slurry state sample

    - Color filter

    - Flotation adsorption research

  • Semiconductor
    - Alien objects research on a silicon wafer
    - Interaction research of abrasive/additive on a wafer surface
    - CMP slurry

  • Polymer and chemical
    - Emulsion dispersion and cohesion
    - Surface modifier of latex
    - Function research of polyelectrolyte
    - Process control of paper production and pulp additive research

  • Pharmaceutical and food
    - Emulsion dispersion and cohesion
    - Dispersion/cohesion control of liposome and vesicle
    - Functionality of surfactants(Micelles)

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