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A Cell counter is an appliance that can count as well as measure their volume. It is based on the fact that cell show great electrical resistance: in other words, they conduct almost no electricity. In a cell counter the cells, swimming in a solution (diluent) that conducts electricity, are sucked one by one into a tiny gap (aperture). Flanking the gap are two electrodes that conduct eletricity. When no cell is in the gap (aperture), electricity flows unabated, but when a cell is sucked into the gap (aperture) the current is resisted, the Cell counter counts the number of such events and also measures the current and hence the resistance, which directly correlates to the volume of the cell trapped
measures the current and hence the resistance, which directly correlates to the volume of the cell trapped
Parameters
WBC, Lymph#, Mid#, Gran#, Lymph%, Mid%, Gran%, RBC, HGB HCT, MCV, MCHC, RDW-CV, RDW-CV, RDW-SD,PLT, MPV, PDW, PCT and Histogram for WBC, RBC PLT
Principles
Electrical impedance method for counting and cyanide free method for hemoglobin
Parameter | Linearity Range | Precision (CV%) |
WBC (10 /L) | 0.0-99.9 | < 3 (4.0-15.0) |
RBC (10 /L) | 0.0-9.99 | <2 (3.0-6.5) |
HGB (g/L) | 0-300 | <2 (70-100) |
MCV (fl) | <1 (70-100) | |
PLT (10 /L) | 0-999 | <5 (200-500) |