Devices and methods for characterizing particles dispersed in a liquid medium

A device for characterizing particles dispersed in a liquid medium comprising:

• a fibered light emission source;
• a fibered optical detector;
• a measurement probe intended to be hermetically submerged in the liquid medium and comprising:
• a confinement tube intended to be arranged in an interior of said measurement probe and to hermetically pass through at least one wall of the probe in order to receive, through an end, a sample of the liquid medium;
• an optical measurement head intended to be arranged in the interior of said measurement probe, comprising focusing optics for focusing, in the confinement tube, an illumination light beam originating from the light emission source and a collection optics for the collection toward the optical detector of a beam of light backscattered by the particles dispersed in the confinement tube;
• and
• a processing unit suitable for the characterization of the particles based on the backscattered-light beam measured by the optical detector.