Horiba Abx Sas

Diagdev

Benoit Merchez

Philippe Nerin

Alexandra Urankar

Didier Cremien

Patrick Brunel

Sebastien Raimbault

A measuring cuvette for counting and/or characterizing cells, the measuring cuvette including a base and a transparent lateral enclosure extending from the base so as to form with the latter an optical measurement chamber; the base having a through-orifice with a diameter of 30 to 100 &#x3bc;m for cells to pass through, characterized in that the base and the transparent lateral enclosure form a one-piece cuvette suitable both for impedance measurement and for optical measurement. Also, a system for characterizing cells, which includes the measuring cuvette.

Measuring cuvette for counting and/or characterizing cells

The invention relates to an electro-optical device for measurements of flow for the characterization of microparticles, comprising a measurement chamber (CUM) in which there circulates the flow of the fluid to be characterized, at least two luminous sources (S,S) of disjoint spectra, a device for measuring resistivity (RES), and at least three other detectors (D,D,D) each allowing the measurement of an optical parameter, the optical parameters being chosen from among fluorescence (FL), extinction (EXT), wide angle diffraction (SSC) and small angle diffraction (FSC).

Device and method for multiparametric measurements of microparticles in a fluid

The invention relates to a method of classifying and flow measuring the refringence of at least two populations of particles present in a fluid. The method uses a light source that has small coherence time, with a coherence length Lc&#x3c;100 &#x3bc;m, that is used under extinction conditions at a center wavelength selected as a function of a range of volumes and of a range of refractive indices expected for the particles under consideration. The method uses a device that, together with the light source, forms a converging illuminating beam of aperture angle that is selected as a function of the range of volumes and the range of refractive indices expected for the particles under consideration at the selected center wavelength.

Device and method for multiparameter measurements of microparticles in a fluid

The invention relaters to a device () for biological analysis by measurement of photoluminescence in a fluid in a measurement tank (). This device () comprises at least two light sources () adapted to emit in different spectral areas respectively appropriate for measurement of absorption and fluorescence, and a sensor device () comprising a sensor (), an optical system (), and filter means (), which three elements are mutualized in accordance with the invention to enable absorption and/or fluorescence to be measured. In accordance with the invention the internal gain of the sensor () is configurable to enable the fluorescence and absorption measurements to be executed sequentially.

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Combaillaux, France

Benoit Merchez