Haemocytometer - GCSE Biology Definition

A haemocytometer is a special tool used in biology to count cells, such as blood cells or other tiny organisms, under a microscope. It looks like a thick glass slide with a grid etched onto its surface. Scientists or students use it to carefully count the number of cells in a specific volume of liquid. By knowing how many cells are within the grid, they can calculate how many cells are in the whole sample. This tool is important for experiments and tests that need precise measurements of cell numbers, like checking blood samples or observing cell cultures.