Art and Science of Laboratory Medicine. Clinical laboratory and biomedical science related news, abstracts and images for medical laboratory professionals, students and other laboratory geeks.
Art and Science of Laboratory Medicine
Tuesday, March 25, 2014
Have you seen these?
The hemocytometer (or haemocytometer or counting chamber) is a specimen slide which is used to determine the concentration of cells in a liquid sample. It is frequently used to determine the concentration of blood cells (hence the name “hemo-”) but also the concentration of sperm cells in a sample. The cover glass, which is placed on the sample, does not simply float on the liquid, but is held in place at a specified height (usually 0.1mm). Additionally, a grid is etched into the glass of the hemocytometer. This grid, an arrangement of squares of different sizes, allows for an easy counting of cells. This way it is possible to determine the number of cells in a specified volume.