Particle Size and Particle Size Distribution Analysis

Research areas
  • Physical Sciences

Dr. Amaia Agirre

Available for external users?

The CHDF3000 determines the particle size distribution of samples suspended in aqueous solutions in the range of 5 to 1 micron in diameter. The size distribution is determined by measurement of the particle elution time in a series of capillary tubes.
The separation is carried out by the Capillary Hydrodynamic Fractionation technique in which the particles behavior is influenced by the velocity profile of a flowing fluid. Due to the influence of the fluid velocity profile, larger particles will have a greater average velocity than smaller ones. The particle size distribution is determined by measuring the transit time of the particles through a series of capillary. For particle detection a UV detector is used with a wavelength range between 210-380 nm and a 35 watt deuterium lamp as the light source.
The CHDF 3000 can be used to analyze a wide variety of colloidal suspensions such as polymer latexes, organic pigments or inorganic particles. The fractionation cartridge and the eluant are for use with either anionic or sterically stabilized dispersions.


Centro Joxe Mari Korta
Av. Tolosa 72
Donostia-San Sebastián