Thoma haemacytometer counting chamber
1891-1930
Thoma haemacytometer, Germany, 1891-1930
- maker:
- Carl Zeiss, Jena
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Science Museum Group Collection
© The Board of Trustees of the Science Museum
Thoma haemacytometer with pipettes, counting chamber in leatherette case, by C. Zeiss, German, 1891-1930
A haemacytometer calculates the number of blood cells within a given amount of blood. The first haemacytometer was invented by German physician, Karl Vierordt (1818-84) in 1852. His invention was later adapted by many others. Any increase or decrease in blood cells in the blood is analysed. It may indicate disease within the body. A low level of red blood cells is called anaemia. A high level of red blood cells is called polycythaemia. This haemacytometer is seen with pipettes and counting chamber. It was made by Carl Zeiss in Jena, Germany.
Details
- Category:
- Clinical Diagnosis
- Collection:
- Sir Henry Wellcome's Museum Collection
- Object Number:
- A608059
- Materials:
- case, leatherette, covered, case lining, velvet, tubing, rubber and tubing ends, plastic
- Measurements:
-
overall: 20 mm x 80 mm x 100 mm, .2kg
- type:
- haemacytometer
