Abstract: The present disclosure provides a particle analyzer and a particle test control method and device thereof. A method comprises, acquiring a blood sample in a test location; preparing a diluted sample by the acquired sample; after acquiring a diluted sample, monitoring whether a pore blocking event occurs during a counting process; when the pore blocking event occurs, suspending the test of the sample, and performing an unblocking operation; and after the unblocking operation is completed, re-counting the same diluted sample without re-acquiring and re-diluting the blood sample by the impedance method after the unblocking operation.

Abstract: The present disclosure provides a particle analyzer and a particle test control method and device thereof. A method comprises, acquiring a blood sample in a test location; preparing a diluted sample by the acquired sample; after acquiring a diluted sample, monitoring whether a pore blocking event occurs during a counting process; when the pore blocking event occurs, suspending the test of the sample, and performing an unblocking operation; and after the unblocking operation is completed, re-counting the same diluted sample without re-acquiring and re-diluting the blood sample by the impedance method after the unblocking operation.

Abstract: A method and particle analyzer for measuring a low concentration particles sample disclosed.

Abstract: The present disclosure provides a particle analyzer and a particle test control method and device thereof. A method comprises, acquiring a blood sample in a test location; preparing a diluted sample by the acquired sample; after acquiring a diluted sample, monitoring whether a pore blocking event occurs during a counting process; when the pore blocking event occurs, suspending the test of the sample, and performing an unblocking operation; and after the unblocking operation is completed, re-counting the same diluted sample without re-acquiring and re-diluting the blood sample by the impedance method after the unblocking operation.

Abstract: The present disclosure provides a particle analyzer and a particle test control method and device thereof. A method comprises, after acquiring a diluted sample, preserving a part of the diluted sample, and monitoring whether a pore blocking event occurs during a counting process; when the pore blocking event occurs, suspending the test of the sample, and performing an unblocking operation; and after the unblocking operation is completed, controlling a liquid addition system to again acquire the preserved part of the sample from a reaction cell or a tube of the liquid addition system and inject it into a counting cell, and then re-counting the sample in the counting cell by an impedance method.

Abstract: A method and particle analyzer for measuring a low concentration particles sample disclosed.

Abstract: A method and particle analyzer for measuring a low concentration particles sample disclosed.

Abstract: This disclosure provides automatic compensation methods, corresponding devices and a corresponding flow cytometer. The automatic compensation method includes: determining a base cell population and a reference cell population in the cell populations according to positions of the cell populations in a dot plot that needs to be compensated, where the base cell population is a double negative cell population and the reference cell population is a single positive cell population adjacent to the base cell population in a compensating direction (S10); calculating automatically a compensation value through a progressive approximation algorithm according to a position of the base cell population, and updating the dot plot with the compensation value, so that the position difference between the reference cell population and the base cell population both in the dot plot in the compensating direction is within a predetermined range (S16).

Abstract: The present disclosure provides a particle analyzer and a particle test control method and device thereof. A method comprises, after acquiring a diluted sample, preserving a part of the diluted sample, and monitoring whether a pore blocking event occurs during a counting process; when the pore blocking event occurs, suspending the test of the sample, and performing an unblocking operation; and after the unblocking operation is completed, controlling a liquid addition system to again acquire the preserved part of the sample from a reaction cell or a tube of the liquid addition system and inject it into a counting cell, and then re-counting the sample in the counting cell by an impedance method.

Abstract: The present disclosure provides a particle analyzer and a particle test control method and device thereof. The method comprises: after acquiring a diluted sample, preserving a part of the diluted sample, and monitoring whether a pore blocking event occurs during a counting process; when the pore blocking event occurs, suspending the test of the sample, and performing an unblocking operation; and after the unblocking operation is completed, controlling a liquid addition system to again acquire the preserved part of the sample from a reaction cell or a tube of the liquid addition system and inject it into a counting cell, and then re-counting the sample in the counting cell by an impedance method.

Abstract: This disclosure provides automatic compensation methods, corresponding devices and a corresponding flow cytometer. The automatic compensation method includes: determining a base cell population and a reference cell population in the cell populations according to positions of the cell populations in a dot plot that needs to be compensated, where the base cell population is a double negative cell population and the reference cell population is a single positive cell population adjacent to the base cell population in a compensating direction (S10); calculating automatically a compensation value through a progressive approximation algorithm according to a position of the base cell population, and updating the dot plot with the compensation value, so that the position difference between the reference cell population and the base cell population both in the dot plot in the compensating direction is within a predetermined range (S16).

Abstract: A particle analyzer may include a sampling unit configured to collect samples containing particles; a sample preparing unit configured to prepare different sub-samples; a reaction unit configured to incubate the sub-samples and one or more corresponding reagents respectively and provide them to the injecting unit; an injecting unit configured to inject the sub-samples to the optical unit; an optical unit configured to irradiate the sub-samples to obtain particle information; a processing unit configured to process and output the particle information; and a threshold value unit configured to compare a total number of particles with a pre-determined threshold value and to output a result of the comparison to the injecting unit to control subsequent injection of one or more sub-samples.

Abstract: A flow cytometer and a fluid system are provided. The fluid system comprises a flow cell, a sample providing unit, a waste container, a sheath container, a negative pressure source, a quantitative unit and a sample flow monitoring unit, the negative pressure source, the waste container and the flow cell are connected, a negative pressure source, which provides a negative pressure relative to the sample providing unit for the flow cell so that the sample providing unit causes the sample to flow into the flow cell under the negative pressure, a sample flow monitoring unit monitors a flow of the sample fluid transported from the sample providing unit to the flow cell and outputs a feedback signal reflecting flow changes of the sample fluid in real-time; wherein the controller receives the feedback signal and controls the quantitative unit to adjust a flow of the sheath fluid according to the feedback signal.

Abstract: A flow cytometer and a fluid system are provided. The fluid system comprises a flow cell, a sample providing unit, a waste container, a sheath container, a negative pressure source, a quantitative unit and a sample flow monitoring unit, the negative pressure source, the waste container and the flow cell are connected, a negative pressure source, which provides a negative pressure relative to the sample providing unit for the flow cell so that the sample providing unit causes the sample to flow into the flow cell under the negative pressure, a sample flow monitoring unit monitors a flow of the sample fluid transported from the sample providing unit to the flow cell and outputs a feedback signal reflecting flow changes of the sample fluid in real-time; wherein the controller receives the feedback signal and controls the quantitative unit to adjust a flow of the sheath fluid according to the feedback signal.

Abstract: The present disclosure provides a particle analyzer and a particle test control method and device thereof. The method comprises: after acquiring a diluted sample, preserving a part of the diluted sample, and monitoring whether a pore blocking event occurs during a counting process; when the pore blocking event occurs, suspending the test of the sample, and performing an unblocking operation; and after the unblocking operation is completed, controlling a liquid addition system to again acquire the preserved part of the sample from a reaction cell or a tube of the liquid addition system and inject it into a counting cell, and then re-counting the sample in the counting cell by an impedance method.

Abstract: A counter assembly, sheath flow impedance count device, and flow cytometer analyzer are disclosed.

Abstract: A particle analyzer may include a sampling unit configured to collect samples containing particles; a sample preparing unit configured to prepare different sub-samples; a reaction unit configured to incubate the sub-samples and one or more corresponding reagents respectively and provide them to the injecting unit; an injecting unit configured to inject the sub-samples to the optical unit; an optical unit configured to irradiate the sub-samples to obtain particle information; a processing unit configured to process and output the particle information; and a threshold value unit configured to compare a total number of particles with a pre-determined threshold value and to output a result of the comparison to the injecting unit to control subsequent injection of one or more sub-samples.

Abstract: A counter assembly, sheath flow impedance count device, and flow cytometer analyzer are disclosed.