Mindray BC-2800 - 2.5 Counting Procedure and Dilution

Fluidic System
2.5 Counting Procedure
2.5.1 Dilution
Usually in blood samples, the cells are too close to each other to be identified or
measured. For this reason, the diluent is used to separate the cells so that they
are drawn through the aperture one at a time as well as to create a conductive
environment for blood analysis. This analyzer can process two types of blood
samples – whole blood samples and prediluted blood samples.
2.5.1.1 Whole blood mode
When analyzing a whole blood sample, this analyzer aspirates 13μL of the
sample and follow the procedure presented in Figure 2-10 to dilute it before
proceeding to the actual analysis.
Figure 2-10 Diluting procedure of whole blood mode
2.5.1.2 Prediluted mode
When analyzing a prediluted sample, the operator should first collect 20μL of
capillary sample and dispense 1.6mL of diluent from this analyzer to predilute the
sample. Then the operator should present the prediluted sample to the analyzer,
2-12 BC-2800 Auto Hematology Analyzer (V1.0)