Veterinary Diagnostic Equipment · Generic
Haemocytometer
In stock
In veterinary practice, a haemocytometer (or hemocytometer) is a specialized glass slide used for the manual counting and quantitative estimation of cells in blood or other biological fluids. It is frequently used for rapid, point-of-care evaluation of White Blood Cells (WBC), Red Blood Cells (RBC), platelets, and sperm counts.
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Specs & features.
The device consists of a thick, durable glass microscope slide that features two indented counting chambers, separated by a groove. Each chamber is engraved with a highly precise laser-etched grid. When a specialized cover slip is placed on the slide, it rests on raised supports, creating a microscopic gap of exactly \(0.1 \text{ mm}\) over the grid. Because the area and depth are strictly defined, the user can count the number of cells in specific squares and calculate the cell concentration per unit volume of the original sample.
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- Counting Grids (Improved Neubauer Chamber): Most veterinary models use the Improved Neubauer grid. It consists of nine large squares, each measuring \(1 \text{ mm} \times 1 \text{ mm}\). The corner squares are used for large, less concentrated cells like WBCs, while the central grid is subdivided into smaller squares for highly concentrated cells like RBCs.
- Defined Volume: The specific dimensions and \(0.1 \text{ mm}\) depth mean that each of the four corner squares holds \(0.1 \text{ mm}^3\) (equivalent to \(0.1 \mu\text{L}\)) of the fluid.
- Dilution & Staining: Samples must typically be diluted to prevent cell crowding and to properly distribute the cells. Veterinary technicians use specific stains (such as Trypan Blue for viability or Turk's solution for WBCs) to lyse RBCs and highlight WBCs for accurate counting.
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