Abstract: A device for counting particles comprises a detector arranged to produce an electrical measurement signal in response to the passage of one or more particles, and a comparator arranged to compare the measurement signal with a threshold signal and to increment a counting value when the measurement signal exceeds the threshold signal, characterized in that it furthermore comprises a threshold-adjusting circuit that applies a lowpass filter to the measurement signal, and that is connected to the comparator in order to use the resulting signal as threshold signal.

Abstract: A device for counting particles comprises a detector arranged to produce an electrical measurement signal in response to the passage of one or more particles, and a comparator arranged to compare the measurement signal with a threshold signal and to increment a counting value when the measurement signal exceeds the threshold signal, characterized in that it furthermore comprises a threshold-adjusting circuit that applies a lowpass filter to the measurement signal, and that is connected to the comparator in order to use the resulting signal as threshold signal.

Abstract: A hematological analyzer on whole blood, for analyzing bloods contained in tubes, wherein the tubes are brought and treated in tube mode by the tube. The analyzer includes a stirring device for receiving a blood tube and stirring the blood tube according to a selected stirring mode, a controller connected to the stirring device for stirring the blood tube under conditions controlled according to specific parameters, and a sampling mechanism for extracting a blood sample in the blood tube previously stirred by the stirring device and transferring the blood sample to an analyzing unit. The analyzer is applicable in particular to hematological analyzers for blood cell count.

Abstract: The present invention relates to a device, to a system, and to a method for the preparation and fractioned dispensing of samples of a fluid. The device of the invention comprises a body having formed therein guide means suitable for receiving a sample-taker member and for guiding it in translation through the device, and at least one preparation chamber enabling an aliquot of a fluid sample dispensed into the chamber by a said sample-taker member to be prepared in a stream of a suitable reagent. The guide means pass through the preparation chamber and communicate therewith to enable an aliquot of fluid to be dispensed into the chamber in a determined position of the sample-taker member in the guide means. The preparation chamber has an introduction orifice for introducing at least one reagent into the chamber for mixing the reagent with an aliquot, and at least one dispensing orifice for dispensing the mixture formed by said aliquot and said reagent to recovery and/or analysis means.

Abstract: The present invention relates to a device, to a system, and to a method for the preparation and fractioned dispensing of samples of a fluid. The device of the invention comprises a body having formed therein guide means suitable for receiving a sample-taker member and for guiding it in translation through the device, and at least one preparation chamber enabling an aliquot of a fluid sample dispensed into the chamber by a said sample-taker member to be prepared in a stream of a suitable reagent. The guide means pass through the preparation chamber and communicate therewith to enable an aliquot of fluid to be dispensed into the chamber in a determined position of the sample-taker member in the guide means. The preparation chamber has an introduction orifice for introducing at least one reagent into the chamber for mixing the reagent with an aliquot, and at least one dispensing orifice for dispensing the mixture formed by said aliquot and said reagent to recovery and/or analysis means.

Abstract: The invention relates to a modular device for implementation in a biological fluid analysis system. It comprises functional modules, each comprising a support for supporting hydraulic components, the support including at least two plates having etched therein circuits that enable channels to be defined when the two plates are assembled side by side. According to the invention, said functional modules comprise at least a preparation first functional module for preparing a fluid for analysis and supporting at least one dilution vessel, and an injection second functional module for injecting the fluid prepared in said dilution vessel towards an analysis unit, said first and second modules being connected to one another.

Abstract: The invention relates to a modular device for implementation in a biological fluid analysis system. It comprises functional modules, each comprising a support for supporting hydraulic components, the support including at least two plates having etched therein circuits that enable channels to be defined when the two plates are assembled side by side. According to the invention, said functional modules comprise at least a preparation first functional module for preparing a fluid for analysis and supporting at least one dilution vessel, and an injection second functional module for injecting the fluid prepared in said dilution vessel towards an analysis unit, said first and second modules being connected to one another.

Abstract: A hematological analyzer on whole blood, for analyzing bloods contained in tubes, wherein the tubes are brought and treated in tube mode by the tube. The analyzer includes a stirring device for receiving a blood tube and stirring the blood tube according to a selected stirring mode, a controller connected to the stirring device for stirring the blood tube under conditions controlled according to specific parameters, and a sampling mechanism for extracting a blood sample in the blood tube previously stirred by the stirring device and transferring the blood sample to an analyzing unit. The analyzer is applicable in particular to hematological analyzers for blood cell count.

Abstract: A displaceable needle (16) for sampling the liquid from the flask is mounted on a slide (5) that is mobile vertically in relation to a support bracket (1) integrated in the sampling apparatus. The sampling needle passes through a percussion head (10) mounted on the base of the bracket and to which is connected a piercing needle. A conduit (12) for rinsing places the percussion head in communication with the outside.Application to blood sampling in a haematological analysis apparatus.