Particle size, zeta potential, molecular weight analyzer

Particle size, zeta potential, molecular weight analyzer

Products > Analytical > Particle size & Zeta potential & Molecular weight > ELSZ-2000ZS


ELSZ-2000ZS is a master product measuring not only the particle size and molecular weight but zeta potential from dilute solution to concentrated solution. New auto temperature gradient function with an extended range from 0 to 90℃ completes melting point and phase transition point analysis. With the electro-osmosis measurement, zeta potential of solid samples and micro-volume(130μl or more) samples can be precisely analyzed.

 Features  (*newly added function)
  • *Higher sensitivity and shorter measurement time with new APD

  • *Melting point and phase transition point analysis enabled by auto temperature gradient function

  • *Wide temperature range between 0 and 90℃

  • *Wide range molecular weight analysis

  • Supports concentrated sample measurement

  • High precision zeta potential analysis thanks to electro-osmosis measurement and plot analysis

  • Supports zeta potential measurement of salt condensed sample

  • *Surface zeta potential of smaller area sample


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
Cellparticle size/molecular weightsquare cell
zeta potentialstandard cell, small amount of disposable cell or concentrated cell
Temperature0 to 90℃ (with gradient function)
Power supply100V, 250VA
Size and weight380(W) x 600(D) x 210(H)mm, approx. 22kg

Measurement items

Molecular weight360 ~ 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%


Ideal for basic and applied research in surface chemistry, inorganic materials, semiconductors, polymers, biology, pharmacy, medicine, and other fields that handle not only fine particles but also the surface science of films and flat samples.

  • New functional material
    - Fuel cell(carbon nanotube, fullerene, function film, catalyst, nano-metal)
    - Bionanotechnology(nano capsule, dendrimer, DDS), nanobubble

  • 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

  • Semiconductor
    - Alien objects research on silicon wafer
    - Interaction research of abrasive/additive on 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 surfactant(Micelle)

6F, 41, Seongnam-daero 925beon-gil, Bundang-gu, Seongnam-si, Gyeonggi-do, 13496, Republic of Korea

Copyright ⓒ 2020 Otsuka Electronics Korea | 한국오츠카전자 All rights reserved.