Disclosed are a water quality analyzer and a method for analyzing water quality. The water quality analyzer includes a first disc system, a second disc system, a colorimetric system, a cleaning system, a mechanical sampling system, an analysis system and a central control display. The first disc system and the second disc system are axially rotatable. A plurality of sample locating positions and a chemical locating positions are provided on the first disc system along a circumference of the first disc system. A plurality of colorimetric cuvette locating positions are provided on the second disc system, and the colorimetric system is arranged at a circumference edge of the second disc system. The cleaning system and the mechanical sampling system are provided between the first disc system and the second disc system. The method includes water sampling, water sample injection, cleaning, reagent extraction, reagent injection, cleaning and colorimetric analysis.

An embodiment provides a nozzle, including: a conical-shaped portion having a first end and a second end substantially opposite the first end, wherein the first end has a smaller diameter than the second end; the first end having an attachment to hold the nozzle in a flow of fluid from an inlet, wherein the nozzle is positioned with the first end facing an inflow of a fluid and the second end facing a chamber; and the conical-shaped portion configured to direct the inflow of the fluid along an inner surface of the chamber, wherein the inflow of the fluid travels around the outer diameter of the conical-shaped portion. Other aspects are described and claimed.

The present disclosure relates to an optical detection device that includes a measurement mechanism and a cleaning mechanism. The measurement mechanism has a first measurement unit and a second measurement unit. One of the first and second measurement units is an optical fiber emitter end and the other one of the first and second measurement units is an optical fiber receiver end. The first and second measurement units each has a measurement end face wherein a preset gap for containing a to-be-detected sample is disposed between two of the measurement end faces and the to-be-detected sample is configured to adhere to the measurement end faces of the first and second measurement units to form a suspended fluid column The cleaning mechanism has a suction tip which is disposed close to the preset gap and is configured to suck the to-be-detected sample in the preset gap.

The automatic analyzer includes a storage unit storing the reaction containers of cleaning target by day unit in such a manner that all the reaction containers mounted on a reaction disk are to be cleaning target within a plurality of days, and a control unit exerts a control in such a manner that during an operation state after the sample of analysis object is dispensed to the reaction containers, a sample of analysis object in each of the reaction containers is analyzed, and not the sample but a detergent is dispensed to the reaction containers of cleaning target of an appointed day, the reaction containers of cleaning target of the appointed day being stored in the storage unit, to soak and wash the reaction containers for a certain time.

A sample cell apparatus for use in spectroscopic determination of an analyte in a body fluid sample includes a first plate member and a second plate member made from an optically clear material. A channel extending into a surface of the first plate member and an opposing surface of the second plate member houses a floating seal, which surrounds a fluid sample chamber. The fluid chamber is closed to define a repeatable optical path-length therethrough by urging the first plate member against the second plate member without compressing the floating seal between the first plate member and the second plate member. The seal channel is vented to prevent fluid pressure from flexing the first plate member or the second plate member. An actuator having an extended foot portion extends over the fluid chamber to help prevent flexing of the first plate member or the second plate member.

A sample cell apparatus for use in spectroscopic determination of an analyte in a body fluid sample includes a first plate member made from an optically clear material and a second plate member made from an optically clear material and opposing the first plate member. A channel extending into a surface of the first plate member and an opposing surface of the second plate member houses a floating seal. The floating seal surrounds a fluid chamber that retains a sample of body fluid for optical measurement. The fluid chamber may be opened for flushing by separating the first plate member from the second plate member. During measurements the fluid chamber is closed to define a repeatable optical path-length therethrough by urging the first plate member against the second plate member without compressing the floating seal between the first plate member and the second plate member.

The present disclosure relates to a biochemical detection instrument. The technical solution is an automatic reactive oxygen species content detection system suitable for a cell microenvironment that includes: a sample transmission reaction system and a detection system which are communicated in sequence through a light avoiding pipeline. A washing system is in communication with the sample transmission reaction system through a water pipeline, and a purge system is in communication with the sample transmission reaction system through a gas pipeline. The sample transmission reaction system further includes a sample injector and a DCFH supply bin which are communicated with a reaction bin through light avoiding pipelines after being connected in parallel. Sample injection valves are respectively configured between the sample injection valve and the reaction bin and between the DCFH supply bin and the reaction bin.

The present application provides an apparatus and method of determining water filming amine concentration, which includes performing a measuring cycle and a cleaning cycle. The measuring cycle includes providing sample water to a sample water measuring container, providing, to the sample water measuring container, one or more reaction chemicals which generate color in the sample water, emitting light, via a light emitter, at a wavelength range and intensity range, through the sample water having the generated color, to a light receiver, receiving an indication of a light intensity of the light emitted through the sample water and determining a filming amine concentration of the sample water based on the light intensity. The cleaning cycle includes providing a cleaning reagent to remove amines from the sample water measuring container.

A high-throughput automatic analyzer integrates a biochemical analysis section and a blood coagulation analysis section. The analyzer is capable of achieving a reduction in size, system cost, and lifecycle cost. The automatic analyzer includes: a reaction disk; a first reagent dispensing mechanism that dispenses a reagent to reaction cells on the reaction disk; a photometer that irradiates a reaction solution in the reaction cell with light; a reaction cell cleaning mechanism; a reaction vessel supply unit that supplies a disposable reaction vessel for mixing and reacting a sample and a reagent with each other; a second reagent dispensing mechanism that dispenses a reagent to the disposable reaction vessel; a blood coagulation time measuring section that irradiates a reaction solution in the disposable reaction vessel with light to detect transmitted or scattered light; and a sample dispensing mechanism that dispenses a sample to the reaction cell and the disposable reaction vessel.

An object of the present invention is to suppress time and effort into generating a calibration curve while ensuring accuracy of the calibration curve in an analysis step of generating the calibration curve by using two or more standard solutions (two or more concentrations). A calibration curve generation method according to the present invention includes acquiring time course data by irradiating a mixed reaction liquid obtained by mixing one standard solution containing a component to be measured having a concentration other than a zero concentration and a reagent reacting with the component to be measured with light and measuring a turbidity change over time of the mixed reaction liquid, extracting pieces of light amount data in a plurality of different times from a fitting line obtained by complementing discrete portions of the time course data, and generating the calibration curve indicating a relationship between the plurality of pieces of light amount data and a plurality of concentrations by converting the plurality of different times into the plurality of concentrations of the component to be measured (FIG. 1).