Today Imen Bel Hadj has submitted the final version of her MSc thesis entitled "Caractérisation de la taille des particules et de leur vitesse de chute en décantation primaire" (Characterization of the size and settling velocity of particles subject to primary settling). The work contributed especially to make new equipment available for routine use in our environmental laboratory: the ViCAs settling velocity distribution analyzer and the Lasentec FBRM (Focused Beam Reflectance Measurement) non-invasive analyzer for particle size distribution. We wish Imen all the best in her future career!