BetaThis search tool is in development. Find out more.
Digital Images

Haemacytometer, Paris, France, 1874

Science Museum, London


Free to use with attribution CC BYCredit: Science Museum, London
Can I use this?

About this work


This early haemacytometer is a simple device. It consists of a microscope slide marked into squares. A blood sample was diluted and placed on the slide. The red cells in the squares are then counted through a microscope. An increase or decrease in blood cells in the blood can indicate disease within the body. A low level of red blood cells is called anemia. A high level of red blood cells is called Polycythemia. The haemacytometer was devised by French physiologist Louis-Charles Malassez. This example is the original instrument described by Malassez. It was made by Verick in Paris. maker: Verick Place made: Paris, Ville de Paris, Île-de-France, France


License information

License information

You can use this work for any purpose, including commercial uses, without restriction under copyright law. You should also provide attribution to the original work, source and licence.

Creative Commons Attribution (CC BY 4.0) terms and conditions


Haemacytometer, Paris, France, 1874. Credit: Science Museum, London. CC BY

We’re improving the information on this page. Find out more.