12 results about "Turbidimetry" patented technology

The invention relates to the technical field of sample analysis, and discloses a specific protein detection method based on double-angle scattering turbidimetry, which comprises the following steps: S1, obtaining a small-angle signal concentration relation curve and a medium-angle signal concentration relation curve, and obtaining a cross threshold signal; s2, the laser light source irradiates the reaction cup from one side of the reaction cup along the horizontal axis, the detection module is located on the other side of the reaction cup and opposite to the laser light source, and the detection module collects small-angle and medium-angle scattering signals at the same time and transmits collected scattering signal information to the control module; and S3, the control module compares the received medium-angle scattering signal information with the cross threshold signal information, dynamically selects and adopts a small-angle scattering signal, and obtains the concentration of the specific protein to be detected according to a small-angle signal concentration relation formula. Or obtaining the concentration of the specific protein to be detected by adopting the medium-angle scattering signal according to a medium-angle signal concentration relation formula. The method can improve the accuracy of protein concentration analysis.

The invention provides a method and a device based on immune scattering turbidimetry. The method comprises the following steps: receiving parameters of a light source and an emission instruction of the light source, and emitting the light source; carrying out dilution treatment on the turbid solution, wherein the dilution treatment proportion is between 150 times and 200 times; the turbidimetric solution is arranged on a light path after the light source emits light, and after the light source scatters the turbidimetric solution, the light path is deflected by 10-20 degrees to form deflected light; performing photoelectric conversion processing on the deflected light to form an electric signal; and performing signal amplification and filtering processing on the electric signal to form an electric signal to be detected. In the detection process of the immune scattering turbidimetry, the detection result is better, the light substitution stability is better, and the detection efficiency is improved.

The invention discloses a method for weakening the influence of lipemia on transmission-scattering fusion enhanced immunoturbidimetry detection. The method specifically comprises the following steps: S1, measuring the mean value of absorbance signal values of photometric points in a specific section after a reaction buffer solution is added into each sample; s2, measuring non-lipid turbidity values of different samples which do not cause low scattering measurement after each sample is added into the reaction buffer solution, namely, a background; s3, comparing the value measured in the step S1 with the value measured in the step S2 so as to judge whether the scattering turbidimetry measurement result needs to be revised or not; the invention relates to the technical field of transmission-scattering fusion enhanced immunoturbidimetry detection. According to the method for weakening the influence of the lipid blood on the transmission-scattering fusion enhanced immunoturbidimetric assay, when the transmission-scattering fusion enhanced immunoturbidimetric assay is carried out, the turbidity of fat particulate matters in a lipid blood sample is strongly correlated with a transmission turbidity signal value of the sample added into a reaction buffer solution, so that the influence of the lipid blood on the transmission-scattering fusion enhanced immunoturbidimetric assay is reduced; meanwhile, the relevance is specifically numeralized through the transmission light absorbance value of the sample and the R1.

The invention belongs to the technical field of analytical instruments and biological medicines, and particularly relates to an erythrocyte osmotic brittleness testing device and a testing method. The testing device comprises a halogen lamp light source, a light collector, a detection cup, a condensing lens path, a transmission light receiver, a scattered light receiver, a detector and a microprocessor. The light collector is positioned on a light path of the halogen lamp light source to enable light to move forwards in the same direction; the condensing lens path is connected with the light collector and the detection cup and gathers the light beams; the detection cup allows light to be transmitted to form transmitted light and scattered light, and the transmitted light and the scattered light are captured by the transmitted light receiver and the scattered light receiver respectively; the detector processes the received signal and transmits the received signal to the microprocessor for analysis. The device utilizes the full spectrum and high brightness of the halogen lamp, realizes erythrocyte osmotic brittleness detection in combination with turbidimetry, and provides an objective quantitative method by measuring the change of light transmittance or absorbance. Compared with a traditional turbidimetric measuring instrument which needs various light sources, is high in cost and complex in operation, the device simplifies detection and reduces cost.

The embodiment of the present application discloses a method for measuring an analyte based on a turbidimetry method, which comprises the following steps: acquiring at least one prediction time period within a maximum measurement duration and a calibration curve corresponding to the at least one prediction time period; obtaining an estimated concentration value of the analyte according to a reaction degree of the analyte in the at least one prediction time period and the calibration curve corresponding to the at least one prediction time period; determining a final measurement time of the analyte according to the estimated concentration value and a preset corresponding relationship between an analyte concentration value and a measurement time; and determining an actual concentration value of the analyte when the final measurement time is reached. The present application also relates to a measuring device for measuring an analyte based on a turbidimetry method, a sample analyzer for measuring an analyte based on a turbidimetry method and a computer readable storage medium.

The utility model provides a turbidity measuring device, and mainly relates to the technical field of turbidity measurement. The turbidity measuring device comprises a detection box, a box cover and a detection bottle, a detection device is arranged in the detection box, a plurality of detection cavities are formed in the detection box, a lower limiting device is installed at the bottom in each detection cavity, a plurality of installation openings are formed in the bottom of the box cover, and magnetic attraction positioning seats are fixedly installed in the installation openings. A handle is movably mounted at the top of the box cover, a control panel is arranged on the box cover, and a storage battery is mounted at the bottom of the detection box; the detection bottle comprises a bottle body and a bottle cap, the bottle cap is in threaded connection with the top of the bottle body, and an iron ball is arranged at the top of the bottle cap; the lower limiting device comprises a supporting seat. The water turbidity detection device has the beneficial effects that the position of the detection bottle in the detection cavity can be quickly and efficiently positioned, meanwhile, batch detection can be quickly carried out, and the working efficiency of water turbidity detection is effectively improved.

The invention relates to the technical field of medical detection, in particular to an immune scatter turbidimetry detection method, which comprises the following steps of: in the immune scatter turbidimetry detection process, acquiring and recording data in the whole reaction process; specifically, a time slice from the reaction starting moment to the T0 moment is used, signal results continuously collected by the slice are used for integration, a background result is obtained, and an end point result is further obtained; and converting a sample result according to a reaction rate per unit time based on an end point result and a background result. According to the method, the interference of a background sampling T0 signal abnormal value and an end point sampling T1 signal abnormal value on a result is solved by using an integral method; finally, the problem of poor precision at low concentration is solved, and the accuracy and precision of a sample detection result are improved.

The invention discloses a method for testing an HbA1c value by correcting latex turbidimetry and a device for testing the HbA1c value by correcting latex turbidimetry, and relates to the technical field of detection methods.The method for testing the HbA1c value by correcting latex turbidimetry comprises the steps that Hb information of a to-be-detected sample, the HbA1c value of the to-be-detected sample and the scattered light intensity value M of the to-be-detected sample are obtained; comparing the preset Hb information with the Hb information of the to-be-tested sample; when the Hb information of the to-be-tested sample is greater than preset Hb information, displaying an HbA1c value of the to-be-tested sample; when the Hb information of the to-be-tested sample is smaller than or equal to preset Hb information, the HbA1c value of the to-be-tested sample is corrected, and the corrected HbA1c value of the to-be-tested sample is obtained; wherein the Hb information comprises an Hb value and an HCT value. The corrected HbA1c value is closer to the true value, the accuracy of the HbA1c value result is improved, the detection range and the use range of the latex turbidimetry are expanded, and the Hb range tolerated by the corrected latex turbidimetry is 30-200g / L; and the detection result of the HbA1c value of the to-be-detected sample is directly corrected, so that the detection time and the detection cost are saved.

Provided is a refractory aggregate for molding sand comprising spherical refractory sintered particles artificially manufactured by a sintering method, which is capable of improving the fluidity of molding sand and achieving excellent mold strength. The refractory aggregate for molding sand, which is composed of spherical refractory sintered particles artificially manufactured by a sintering method, has a roundness of 0.70 or more, an average particle diameter of 0.01-1.00 mm, and a total pore volume of 2-10 [mu] m as determined by a mercury intrusion detector within the range of 0.20-0.50 mL / g, and further has a pore diameter of 2-10 [mu] m as determined by a mercury intrusion detector within the range of 0.20-0.50 mL / g. The refractory aggregate for molding sand is configured such that the amount of mixed fine powder is not more than 3000 NTU in terms of a turbidimeter measured by turbidimetry.

The invention provides a multi-wavelength multi-channel blood coagulation detection device which comprises a multi-wavelength light source assembly used for providing detection light of multiple wavelengths, and the multi-wavelength light source assembly is connected with the light input end of a multi-channel detection assembly through the output end of an optical fiber beam splitter; the multi-channel detection assembly is configured to receive multi-wavelength transmission light signals through a transmission turbidimetric method and generate a blood coagulation reaction curve based on photoelectric conversion and algorithm processing, and a reagent strip base of the multi-channel detection assembly is mechanically connected with a reagent sliding table of the reagent strip movement assembly; accurate positioning and synchronous conveying of the reagent strip in detection of a solidification method, a chromophoric substrate method and an immunoturbidimetry are realized; and the reagent strip movement assembly is used for driving automatic positioning and replacement of the reagent strip, and a stepping motor of the reagent strip movement assembly drives a reagent sliding table to move along a linear guide rail through a synchronous belt and works cooperatively with a detection mounting block of the multi-channel detection assembly, so that a light path is accurately aligned with a sample area in the detection process. Interference factors such as jaundice, hemolysis and lipemia in a blood sample are eliminated through multi-wavelength cooperative detection, meanwhile, multi-item parallel detection is achieved, and the detection efficiency and accuracy are remarkably improved.

The application provides a double-wavelength spectrophotometric turbidimetry colorimetric probe and application thereof, the colorimetric probe comprises a light source, a sample cell and a photoelectric receiving assembly arranged in sequence; the photoelectric receiving assembly comprises a first photoelectric receiving assembly and a second photoelectric receiving assembly; light in the light source is divided into two paths after passing through the sample cell, and light of different wavelengths enters the first photoelectric receiving assembly and the second photoelectric receiving assembly respectively, and a first electric signal is output by the first photoelectric receiving assembly, and a second electric signal is output by the second photoelectric receiving assembly. Compared with the prior art, the colorimetric probe provided by the application, in combination with the use of the double-wavelength spectrophotometric turbidimetry, can accurately calculate the concentration of chloride ions in the acid copper tank solution through the absorbance of different wavelengths, not only the detection speed is fast, but also the accuracy and precision of measurement can be ensured when the content of chloride ions is 0.1 mg / L, and the problem of low data accuracy of the detection method for the detection of trace chloride ions in the acid copper tank solution is effectively solved.