Patent ID: 7230698
Filing Date: 2007-06-12
Classification: G01N

Abstract:
1. A particle size distribution measurement device comprising; a suspension circulation system where a circulation bath and a flow cell are connected via a circulation channel so as to circulate a suspension where particles are dispersed in a dispersion medium; an optical measurement system where an inspection light is irradiated onto the suspension flowing within the flow cell, and a particle diameter distribution of the particles in the suspension is measured based upon diffracted and/or scattered light; a dispersion medium supply system that supplies the dispersion medium to the suspension circulation system; and a suspension drainage system that drains the suspension from a drainage outlet established in the circulation channel, and wherein the dispersion medium supply system is connected in the vicinity of the drainage outlet of the circulations channel composing the suspension circulation system so as to pressure-pour the dispersion medium from the dispersion medium supply system to the circulation channel.