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Research and teaching centre
environmental geosciences
Research and teaching centre
environmental geosciences

Tools Colloid characterisation

Suspended particle size

  • particle size measurement in liquid suspension (0.01-3000 µm) by laser diffraction (Malvern Mastersizer 3000)
  • size measurement of nanoparticles in liquid suspension (1-3000 nm) by dynamic light scattering (Malvern Zetasizer NanoZS)
  • size measurement, counting, and shape analysis of suspended particles (>0.5 µm) by image analysis (Occhio, Flow cell FC200S)
  • sedimentation/flotation rate and height-resolved turbidity measurements (Formulaction, Turbiscan Lab)

Surface load

  • measurement of the Zeta potential of suspended particles (Malvern Zetasizer NanoZS)
  • Zeta potential measurement of immobile surfaces (grains, membranes, ...) by flow potential (CAD Instruments, ZetaCAD)
  • high resolution automatic titrator with sample changer (Metrohm Titrino)

Particle shape

  • size measurement, counting and shape analysis of suspended particles (>0.5 µm) by image analysis (Occhio, Flow cell FC200S)
  • Atomic force microscope (Bruker, Innova AFM)

And also ...

  • UV-visible spectrometer with integrating sphere for liquid and film analysis (Jasco, V-650)
  • rotor-stator emulsifier for cosmetic preparations (VMI, Turbotest)
  • particle size fractionation by tangential filtration (50 kD-0.5 µm) (Repligen, Krosflo)
  • fractionation by ultracentrifugation (Beckman Coulter, Optima L-100 XP)
  • ultrasonic treatment with a high frequency probe