Particle analyzer for analyzing particles

1. A particle analyzer comprising:

a sampling unit;

a sample preparing unit;

an optical unit configured;

an injecting unit;

a reaction unit;

a processing unit; and

a computer readable medium with encoded computer-executable instructions that, when executed by the processing unit, cause the processing unit to perform operations for outputting the particle information for an injection cycle, the operations comprising:

instructing the sampling unit to collect samples containing particles;

instructing the sample preparing unit to prepare a plurality of sub-samples;

instructing the reaction unit to incubate the particles and one or more corresponding reagents;

instructing the injecting unit to inject a first sub-sample having a first preset volume and a first number of particles to the optical unit;

instructing the optical unit to irradiate the injected particles to obtain particle information associated with the particles;

comparing the first number of particles with a pre-determined threshold value;

outputting a result of the comparison to the injecting unit; and

controlling a volume of a subsequent, second injection of at least a second sub-sample based on the result of the comparison, wherein the volume of the second injection is different than a second preset volume of the second sub-sample.

2. The particle analyzer according to claim 1 , wherein the sample preparing unit of the particle analyzer is configured to prepare sub-samples for total particle counting and particle classification.

3. The particle analyzer according to claim 2 , wherein the injecting unit injects a sub-sample for total particle counting in a pre-determined volume and injects a sub-sample for particle classification according to a result of comparing the number of particles of the sub-sample with a threshold value, and when a number of the particles is not less than the threshold value, the injecting unit injects the sub-sample in a first injecting volume, and when a number of the particles is less than the threshold value, the injecting unit injects the sub-sample in a second injecting volume, the first injecting volume being less than the second injecting volume.

4. The particle analyzer according to claim 3 , wherein the injecting unit employs a motor to drive the injecting unit to inject the sub-sample in the first injecting volume or the second injecting volume by controlling a speed and/or driving time of the motor.

5. The particle analyzer according to claim 1 , wherein the samples are blood samples and the particles are white blood cells.

6. The particle analyzer according to claim 1 , wherein the processing unit outputs scatter diagrams.